Influence of planting geometry and mother plant nutrition on seed yield and quality on parental lines of maize hybrid MAH 14-5

Abstract

An experiment was conducted at National Seed Project, University of Agricultural Sciences, GKVK, Bangalore during rabi 2017-18 to evaluate the influence planting geometry and mother plant nutrition on seed yield and quality of parental lines (Male: CML-451 and female : CAL-1443) of maize hybrid MAH 14-5. The maize parental lines were sown in the field with four fertilizer doses viz., F1-112.5:70:50 NPKha-1 + 10 kg ZnSo4, F2-150:70:50 NPK ha-1+ 10 kg ZnSo4, F3-187:70:50 NPK ha-1+ 10 kg ZnSo4, F4-225:70:50 NPK ha-1+ 10 kg ZnSo4 and at four different spacing viz., S1- 30×20 cm, S2- 45×20 cm, S3- 60×20 cm, S4-60×30 cm. Among the interactions, the highest field emergence in male observed in S2F3 (98.7%), plant population S1F4 (97.3), plant height S3F2 (138.3 cm) at the time of harvest, number of seeds per cob S3F2 (138.2), cob weight S3F2(138.8 cm), seed weight per cob in S3F2 (475.2 gm), seed yield per hectare in S2F3 (29.45 q/hac), whereas in case of female highest field emergence was observed in S3F1 (97.3%), plant population S1F2 (104.3 cm), plant height S3F2 (164.5 cm) at the time of harvest, number of seeds per cob S3F2 (275.3), cob weight (138.8 cm), seed weight per cob in S3F2 (273.2 gm), seed yield per hectare in S2F3 (25.96 q/hac). In male, the lowest field emergence in male observed in S3F3 (95.7%), plant population S4F4 (38.0), plant height S3F2 (114.0 cm) at the time of harvest, number of seeds per cob S3F2 (138.2), cob weight (138.8 cm), seed weight per cob in S4F1 (275.2 gm), seed yield per hectare in S2F3 (19.06 q/hac), whereas in case of female lowest field emergence was observed in S3F1 (94.3%), plant population S1F2 (38.7 cm), plant height S3F4 (136.2 cm) at the time of harvest, number of seeds per cob S3F1 (217.3), cob weight S4F1(207.9 cm), seed weight per cob in S4F1 (142.2 gm), seed yield per hectare in S4F1 (11.58q/hac).