Monday, October 13, 2008
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ADAPTIVE RESEARCH TRIALS AND RECOMMENDATIONS

Activities

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Sr. #
Title of Study
Problem Identified
Departmental Recommendations
Adaptive Research Recommendations/Solutions
WHEAT CROP
1 Evaluation of the effect of different secondary tillage implements on Wheat (Sheikhupura Vehari & Gujranwala Non-adoption of appropriate secondary tillage implements by farmers Bed preparation with primary and secondary tillage implements A three year study have been carried out at Sheikhupura and Gujranwala, to compare the effect of different secondary tillage implements like Rotavator, Disc Harrow and Cultivator ( farmers practice ) on wheat yield. The results revealed that the use of Disc Harrow(2 times) followed by cultivator(2 times) have shown the best yields of 3467 and 3824 kg/ha with an increase in yield by 11 and 14% as compared to farmers practice (Cultivator 4 times ) which have given yield of 3118 and 3352 kg/ha respectively. In Vehari disc harrow + cultivators is most suitable as compared the rotavativor + cultivators.
2 Demonstration and Evaluation of effect of breaking hard pan and its effect on the yield of wheat (Sheikhupura) Non-realization of the effect of hard pan breaking in increasing wheat yield by the farmers Chisel plow At ARF sheikhpura use of chisel plow M.BPlow and para plow gave the highest yield and shown the increase of 30.39%/20.31 and 29.34% more over control. (Cultivator)
3 Demonstration and evaluation of the effect of seed rate on sowing time of wheat crop (Gujranwala) Unawareness of farmers about suitable seed rate at different dates. Seed rate 125 kg/ha for sowing time 15th November to 30th December. The highest yield (3700 kg/ha) was obtained with 125 kg/ha followed by 150 and 175 kg/ha seed rate (3166 and 2496 kg/ha) used on 20th November. However, on 5th and 20th December, 150 kg/ha seed gave higher yields (3000 and 2150 kg/ha) as compared to 125 (2150 and 1750 kg/ha) and 175 kg/ha seed (2283 and 1933 kg/ha). Hence 125 kg/ha seed rate during November and 150 kg/ha for sowing in December, is recommended.
4 Evaluation of the effect of various drilling spaces on wheat yield (Gujranwala) Wheat sowing by broadcasting Line sowing Three years trials have been conducted to study the effect of line spacing on the yield of wheat crop, where line spacing of 15(6), 23(9), 30(12), 38(15) and 45(18) cm (inches) were tested. The data revealed that the drilling in 15(6) and 23(9) cm (inches) line spacing have shown the same trend of highest yield of wheat i.e. 4250 kg/ha and 4207kg/ha respectively. The trials data further depict that with the increase in line spacing the yield reduces considerably, as it has shown 3801Kg/ha at 45(18) cm(inches) spacing
5 Demonstration and evaluation of time of NPK application to wheat crop under local conditions (Sheikhupura & Gujranwala.) Lack of awareness about the time of application of fertilizer to wheat crop by the farmers. Application of full P&K and ½ N as basal dose and ½ N with first irrigation.. In Sheikhupura maximum yield was obtained by the application of full P&K and ½ N at sowing time. ¼ N with Ist irrigation and ¼ at 2nd irrigation which increased the 14% wheat yield against the departmental recommendations use of 114-84-62 NPK kg/ha increase yield 17%. The highest yield (4019kg/ha) was obtained when full PK and ½ N was applied at sowing and ½ N with Ist irrigation at Gujranwala.
6 Demonstration and evaluation of different sources of N&P for wheat crop under local conditions (Sheikhupura) Unawareness of different sources of Nitrogen and Phosphorous fertilizer by the farmers. DAP and Urea. Ammonium Nitrate and DAP for wheat crop as compared to departmental recommendation (DAP+Urea). It yielded 15.20% more yield over departmental recommendation in Sheikhupura.
7 Demonstration and evaluation of effect of Potash application to wheat crop after rice (Sheikhupura Gujranwala & D.G.Khan) Lack of awareness of farmers about potash application to wheat sown after rice 62 kg/ K/ha is recommended. In D.G.Khan application of K@93 kg/ha with 114-84 N and P kg/ha yielded 45.48% more over check. In Sheikhupura the use of 124kg /ha K along with 128-114 NP kg/ha gave the highest yield of 12% more against the recommended dose (62kg/ha of potash) in Gujranwala application of potash @ 62 kg/ha increases the yield from 2714 kg/ha (control plots) to 3208 kg/ha . Application of K at higher doses did not gave significant increase in yield. Hence K fertilizer @ 62kg/ha is recommended for wheat crop.
8 Demonstration and evaluation of the impact of Gypsum application to wheat crop (Karor & Sargodha) Poor efficiency of plant food nutrients in problem soils. Application of Gypsum to wheat crop to improve the soil condition and enhance the efficiency of other inputs. In Karor application of Gypsum @ 45 bags/ha increased 15% wheat yield. In Sargodha, the use of 45 bags/ha of Gypsum in the presence of NPK @ 128-114-62 kg/ha and 90-85-62kg/ha recorded the highest yield i.e. 3890 kg/ha and 3621kg/ha with an increase of 31.40% and 22.31% respectively against the treatment where no Gypsum was applied (2960 kg/ha).
9 Evaluation of effect of Ist. Irrigation on the yield of wheat sown after rice (Gujranwala) Non realization of the impact of time of Ist. Irrigation to wheat crop. Application of Ist. Irrigation after 12-18 days of germination. Four years results of trials have shown that Ist. Irrigation after 35 days of germination gave the highest yield (3273 kg/ha). The yield obtained when irrigated at 45,55 and65 days after germination was 2749, 2649 and 2645 kg/ha, respectively. It is depicted from results that the yield decreased if irrigation was delayed after 35 days.
10 Evaluation of the effect of Mechanical Weeding on Wheat yield .(Gujranwala) High weed infestation and expensive manual weeding Chemical weed control A three years study have been carried out where Mechanical, Manual and chemical weeding procedures were tested under Broadcast and Drill sowing methods to evaluate the effect of Mechanical weeding on wheat yield. In Broadcast method, Chemical and Manual weeding proved the best with yield of 1800 kg/ha and 1867 kg/ha, with increase in yield to 19 and 15% respectively over control (1567 kg/ha). Whereas Mechanical weeding is not recommended in Broadcast method because of its low yield (1583 kg/ha) . Under drilling method of sowing Manual and chemical weeding have shown the best with 2302 kg/ha and 2410kg/ha with increase in yield to 33% and 39% against the control (1725 kg/ha). Further under drilling method, mechanical weeding has also shown good results (2229kg/ha) with an increase of 29% in yield against the control. .
It thus concludes that Mechanical weeding being least harmful to soils and environment, most economical as compared to Manual and Chemical weeding has an edge.
11 Evaluation of effectiveness of bar harrow in wheat sown by broadcast (Gujranwala) Reluctance of farmers about the use of bar harrow for weed control in wheat. Use of bar harrow after Ist Irrigation. The highest yield (3116 kg/ha) was obtained by manual weeding followed by chemical weeding (2884 kg/ha) and bar harrow (2513 kg/ha). The increase in yield was 42.9, 32.2 and 15.2% by manual, chemical and bar harrow, respectively over the control (2181 kg/ha). However, the CBR was higher for chemical control. Hence it is an economical method of weed control.
12 Demonstration and evaluation of application method and time for weedicides of Wheat crop. (Gujranwala) Application of weedicide is delayed in rice area due to delay in Ist irrigation which results in less effective control Application of weedicide after Ist irrigation. The results for 1999, 2000 and 2001 have shown that the highest yield (3432 kg/ha) was obtained when Tolkan was applied by mixing with Urea and broadcasted before Ist irrigation. Tolkan mixed with sand and broadcasted also gave similar yield. (3554 kg/ha). However affinity was more effective when spray as compared to mixing in Urea or sand. Hence, Tolkan (Isoproturon)mixed with Urea or sand and broadcast before Ist irrigation is very economical and efficient for weed control. In vehari Dicuran-MA @ 2.5 kg/ha was the most effective weedicides against wheat weeds when sprayed after first irrigation in Tar wattar. It gave 35% higher yield than the check (no weedicides) followed by Tribunil, Arelon, Dosanex , that gave 30%, 25% and 21% higher yield over check. It was further concluded that spray is better than broadcasting.
13 Demonstration and evaluation of the impact of growth period of weed on the yield of wheat crop .(Sargodha) Infestation of weeds in wheat crop. Application of weedicides after Ist irrigation.

The highest yield (3650 kg/ha) was obtained in the condition where crop infested with weeds for first 30 days and free from weeds up to harvesting which is 79.83% higher than the treatment where crop infested with weeds from sowing upto harvesting which yield 2030 kg/ha. The yield decreased gradually with the increasing of infestation period of wheat crop with weed i.e. the crop infested with weed from first 40 days, 50 days, 60 days, 70 days and 80 days wherein 2980kg/ha and 2800kg/ha and 2760 kg/ha 2700 kg/ha and 2630 kg/ha yield obtained respectively which are 46.835%, 37.974%, 3.008% and 29.552% higher than the control, respectively

RICE CROP
1 Evaluation of the effect of soil inversion tillage on Rice yield (Sheikhupura and Gujranwala) Non- adoption of deep tillage practices by farmers Use of cultivator

Five years studies at. A.R.Farms revealed that use of M.B.Plow coupled with cultivator (2) followed by planking gave 12.66% higher yield gave than puddling with conventional tillage implements i.e. cultivator (2) followed by planking

2 Demonstration and evaluation of the effect of seed rate per marla of paddy nursery on the yield of rice crop (Gujranwala) Non adoption of proper seed rate for growing nursery by farmers 1/2kg. Seed per marla The highest yield of rice crop in B-385 (3437 kg/ha) was obtained when the nursery was sown with ½ kg seed per marla . The yield of the crop decreased when higher seed rate was used 3333, 3053 and 3047 kg/ha for 1,1.5 and 2 kg/marla for the treatments respectively.
3 Demonstration and evaluation of effect of the age of rice nursery on the yield of rice crop(Gujranwala) The farmers are not aware of the impact of age of nursery on the yield of rice. 30 to 40 day old nursery is recommended. The impact of age (25,30,35,40,45,50 days old) of nursery on the yield of rice crop was evaluated. The results showed that 30 & 35 days old nursery gave almost similar yield ( 4161&4150 kg/ha respectively) as age of nursery increased i.e. 40,45&50days, the yield decreased to 3784,3325& 2998 kg/ha respectively. The age of nursery rather had a significant effect on tillering capacity of plants. 30 & 35 days old nursery gave 15.66 & 16.33 tillers respectively. Where as tillering of plants decrease from 14.0 to 8.66 when age of nursery increased from 40 to 50 days. Hence the optimum age of nursery for getting maximum yield is 30 to 35 days.
4 Demonstration and evaluation of different planting densities and planting dates on rice production (Gujranwala) Low plant population 197000 hills/ha In three years results planting densities, 148200, 197600 and 247000 hills/ha, gave 3422, 4211, and 3785 kg/ha yield, respectively when transplanted on 15th July. The same densities transplanted on Ist July gave 3074, 4183 and 3515 kg/ha respectively. The lower yields were obtained for transplanting on 16th June and 31st July. Hence, 197600 hills/ha gave higher yields and first July to 15th July was optimum transplanting time.
5 Demonstration and evaluation of the effect of time of fertilizer application on rice production(B-385) (Sheikhupura, Sargodha) Improper and untimely application of fertilizer to rice crop by the farmers Use of full PK and ½ N before transplanting and ½ at 35 DAT. The highest yield was obtained when all P&K and ½ N was applied as basal dose while the remaining ½ N was split up into two installments and applied after 25 and,50 DAT. The increase over departmental recommendation was 27.57% and 4.64% in Sheikhupura and Sargodha respectively
6 Evaluation of the effect of application timing of Phosphatic fertilizer on rice production (G/wala) Non application of phosphatic fertilizer at the time of transplanting of rice. Application of Phosphorous before transplanting The highest yield 4465 kg/ha was obtained when P was applied at Puddling followed by the treatment in which P was applied at 15 DAT (4293 kg/ha). Hence application of phoshatic fertilizer @ 84 kg/ha is recommended at the time of puddling in Gujranwala
7 .Demonstration and evaluation of the effect of different doses of K fertilizer application on the yield of rice variety Supper Basmati (Sargodha and G/wala) Non realization of the impact about the use of K in rice crop. Use of 80 kg/ha In Sargodha the highest yield of variety super Basmati was obtained as 4012 kg/ha where K @ 120 kg/ha (with 136-80 NP kg/ha constant) was used, which was 16.24% more than departmental recommendation where K @ 62 kg/ha was used having yield 3450 kg/ha. Where as the treatment K @ 100/kg/ha was used, the yield was 3600 kg/ha which was 4.64% more than departmental recommendation while in Gujranwala the highest yield (3812 kg/ha) was obtained with 100kg/ha of K followed by 80kg/ha of K (3683 kg/ha) and application of K @ of 62 kg/ha (3146 kg/ha . ) However the highest CBR (1:4.19) was obtained with K at the rate of 80 kg/ha followed by CBR (1:4.16) with 100 kg/ha of K. In Gujranwala application of Potash @ 80 kg/ha is recommended.
8 Demonstration and evaluation of effect of time of application of ZnSo4 on the production of rice crop.(Gujranwala and Sheikhupura) Application of ZnSo4 at improper time which causes low yield Application of ZnSo4 during puddling or 10-15 DAT The highest yield(4355 kg/ha) was obtained when ZnSo4 was applied@ 5kg/ha(35%) during puddling, followed by 4263 kg/ha when it was applied at 10 DAT. These yields were 11.86% and 9.5% higher respectively as compared to the check (3893 kg/ha). The application of Zinc at the time of puddling gave the highest yield..In SheikhupuraThe highest yield was obtained by applying ZnSo4 at10 DAT. This is in accordance with departmental recommendation and when we compare the yield with no znso4 application as it is in farmers practice the increase was 25.70%

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