Proceedings of the Fifth Asian Regional Maize Workshop - Search ...

fertilizer dose of 120-60-40 kg N-P 2
0 5
-~O/ha has been found to be ideal. lklder experimental
conditions intercropping of maize with 1egllllinous crops like black or green gr_, and oH seed
crops such as groundnut, has been found to be more rellUl8rative as compared to monoculture of
maize. For the management of weeds, preemergence app1 ication of Atrazine at 0.5 kg ai/ha is
found to be most effective.
The yield potential of maize during winter season has been found to be much higher due to
the fact that the crop is comparatively free from vagaries of the weather and there is a lower
incidence of diseases and insect pests. For winter maize cultivation, it is reoonnended to
maintain a plant population of about 80,000 p1ants/ha and apply a higher dose (180 kg/hal of N.
Like summer, in winter crop also intercropping with potato, lentil, peas, rajmas , and cluster
beans has been found to be profitable. Based on research done at Ludhiana and Dholi, one of the
important findings for winter maize has been the adoption of transplanting maize seedlings to
Table 9. Performance of cold tolerant hybrids tested in Punjab (3 locations). 1992-93 Winter.
Days
" over
Experimental Mean to 50S silk check
JH-6154 8619 142 16.49
JH-6151 8563 139 15.73
JH-6165 8289 139 12.03
Ganga 11 (check) 7399 142
avoid delayed emergence due to low temperature (Table 10). The other advantage of the adoption
of such methodology includes a good alternative to late sown wheat crop, and it also helps in
eradication of the weed Pha7aris minora which grows along with wheat. Further experiments on the
transplanting technique, age of nursery, and time of transplanting are being studied more critically.
Table 10. Response of direct seeded and transplanted maize to different dates of sowing at Dholi
(Bihar). Rabi 1991-92 and 1992-93.
Date of Planting Grain yield (t/ha) " increase due to
planting method ------- transplanting
1991-92 1992-93 Mean
Nov. 15 Direct sown 4.15 4.68 4.42
Nov. 30 Direct sown 3.07 3.87 3.47
Transplanted 2.52 4.57 3.54 2.0
Dec. 15 Direct sown 2.60 3.38 2.99
Transplanted 3.25 4.90 4.08 36.5
Dec. 30 Direct sown 1.53 2.53 2.03
Transplanted 2.76 4.18 3.47 70.9
Jan. 15 Direct sown 1.18 2.17 1.68
Transplanted 2.59 3.18 2.88 71.4
C.D. at 5. 0.5 0.74
51