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Citation: Sk. Roy et al., Integrated nutrient management by using farmyard manure and fertilizers inpotato-sunflower-paddy rice rotation in the Punjab, J AGR SCI, 137, 2001, pp. 271-278

Authors: Trehan, SP Sharma, RC

Citation: Sp. Trehan et Rc. Sharma, Phosphorus and zinc uptake efficiency of potato (Solanum tuberosum) in comparison to wheat (Triticum aestivum), maize (Zea mays) and sunflower (Helianthus annuus), I J AGR SCI, 70(12), 2000, pp. 840-845

Authors: Trehan, SP Claassen, N

Citation: Sp. Trehan et N. Claassen, Potassium uptake efficiency of potato and wheat in relation to growth in flowing solution culture, POTATO RES, 43(1), 2000, pp. 9-18

Authors: Trehan, SP Claassen, N

Citation: Sp. Trehan et N. Claassen, External K requirement of young plants of potato, sugar beet and wheat in flowing solution culture resulting from different internal requirements anduptake efficiency, POTATO RES, 41(3), 1998, pp. 229-237