Maximization of Seed Size Tubers in Potato through Manipulation of Intra Row Spacing, Nitrogen Levels and Crop Duration under Irrigated Condition in Indo –Gangetic Plains of Bihar
Abstract
A field experiment was conducted during winter season (Oct-Feb) of 2013-14 and 2014-15 with four replications and eight treatments to produce maximum yield of seed size tubers of potato cultivar,
“Kufri Pukhraj” by interaction of two nitrogen levels (120 and 150 kg N/ha), two intra row spacing (15 and 20cm), and two crop duration(haulm cutting at 70 and 80 days after planting). The narrow
intra row spacing i.e. 15 cm, produced significantly higher yield of seed size grade tubers while wide spacing i.e. 20 cm produced higher yield of large grade tubers. The total tuber yield and tuber number was significantly more in closer spacing. Percent production of seed size tubers to total tubers (both on weight as well as number basis) was higher at narrow spacing. Haulm cutting at 80 days after planting produced significantly higher yield of large grade tuber, while haulm cutting at 70 days after planting, produced significantly higher yield of seed size grades tubers. The total tuber number and tuber yield was significantly higher in haulm cutting at 80 days after planting.
Lowest total tuber yield and number was observed in wider spacing with lower nitrogen level and shorter duration. Per cent production (both on weight as well as number basis) of seed size tubers to
the total tuber was significantly higher at 60 x 15 cm with 120 kg N /ha and longer crop duration. Plant spacing of 60 x 15 cm with higher fertility levels and shorter crop duration (70 day) was found to be second best treatment in terms of production of seed size tuber.
References
Annonymous (2010) Area, production and productivity statistics on potato. Directorate of Economics & Statistics, Ministry of Agriculture, Govt. of India, New Delhi
Garg, V K, Sarjeet Singh, Desh Raj and Ashwani kumar (2000). Effect of physio-agronomical manipulations on the number and yield of seed tubers in breeder seed in the hills. In: Potato, Global Research and development, Vol. I( SM Paul khurana et. al. Eds.). IPA, Shimla. PP. 413-18.
Gomez KA and Gomez AA (1984) Statistical Procedures for Agricultural Research. John Wiley and Sons, New York, USA: 684p
Kushwah,V.S. and Govindakrishnan P.M. ( 2003). Cultural practices for seed and ware potato In: The Potato Production and Utilization in Sub-tropics ( Khurana, SM Paul et.al., Eds.) Mehta Publishers, New Delhi. Pp104-110.
Malik, G C and D C Ghosh (1999). Effect of fertility levels, plant density and variety on growth and productivity of potato. In : Abstracts, Global Confrance on Potato, December 6-11,1999, New Delhi, PP 121
Singh, Narendra, Y S Malik, M L Pandita and B K Nehra (1993). Effect of seed size, spacing and haulm cutting dates on yield of seed size tuber in potato Cv Kufri Badshah. Haryana J. Hort. Sci. 22:311-15.
Singh NP and Ragav M (2000) Response of potato to nitrogen and potassium fertilization under UP Tarai conditions. J Indian Potato Assoc 27: 47-48
Suman, YS Malik and S C Khurana(2003). Effect of fertilizer, spacing and crop duration on growth and yield of potato. J. Indian potato Assoc. 30(1-2):47-48
