Effect of Sowing Dates and Maize Hybrids on Maize Productivity in Southern Rajasthan

Asian Resonance(P: ISSN No. 0976-8602 RNI No. UPENG/2012/42622 VOL.-III, ISSUE-III, JULY-2014 E: ISSN No. 2349-9443) 

Abstract


 Hargilas 

Assistant Professor Agricultural Research Station MPUAT, Banswara, Rajasthan

A field experiment was conducted during kharif season of 2011 to find out appropriate date of sowing with suitable hybrids of maize in a clay loam textured soil at Agriculture Research Station (MPUAT) Banswara, Rajasthan. The experiment consisted of four dates of sowing viz., D1: 25 standard week (18-24 June), D2: 26 standard week (25June01July), D3: 27 standard week (02-08 July), and D4: 28 standard week (9-15 July) and three hybrids viz. Bio-9681, Prabal and PEHM-2 was laid out in split plot design with three replications. The sowing was done on 18th June, 25th June, 2 July and 9th July being the first day of standard weeks 25, 26, 27 and 28, respectively. The result revealed that date of sowing has maximum bearing the grain yield of maize during rainy season. The highest grain yield of 53.36q/ha was recorded when maize was planted on 18th June which was significantly superior over the following sowing dates which there was reduction in yield by 9.8, 17.74 and 37.71 percent at D2,D3 and D4, respectively. The crop sown on 18th June calculated maximum GDD of 16930 days-1 and maximum heat use efficiency of 7.52 kg/ha0 day-1 . The lowest yield of 33.46 q/ha was recorded when the crop was planted on 9 July which calculated 37.71 percent yield reduction compared to sowing on 18 June. Among the hybrids tried, The Bio-9681 hybrid was most responsive, giving rise to 52.32 q/ha of grain yield and use maximum growing degree days (17750 day-1 ) compared to prabal (15530 day-1 ). The PEHM-2 hybrid was low yielder (38.96q/ha) with least utilization of GDD (15310 day-1 ) with lowest HUE of 6.88 kg/ha0 day-1 . The yield components and economics were found highest at first date of sowing with maize hybrid var. Bio9681 which observed sequential reduction in next sowing date. The results indicated that advanced planting of maize in 25 standard week with medium to late maturity hybrids obtained higher yield might be because of efficient utilization of weather resources.

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http://www.socialresearchfoundation.com/upoadreserchpapers/1/15/1411061219124th%20hargilas%20meena.pdf

 


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