S. B. Singh , K. G. Prasad , G. N. Gupta , G. S. Maurya

Abstract

Influence of N, P, K fertillzation was studied in two year old stand of Pinus patula at Paymund, Ooty. Trees smaller than 2m responded to 20kg of N/ha and also to 15kg of P₂O₅ whereas, the trees more than 3m tall showed growth response to nitrogen only. Nitrogen and phosphorus interaction was not significant, Phosphorus × potassium interaction was positive on growth of trees smaller than 2m. Nitrogen and potossium relationship was antagonistic in all plants. The study indicates the need to carry out comprehensive experimental trials on methods of fertilization in pine stands.

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S. B. Singh , K. G. Prasad , S. F. Hillary , G. S. Maurya

Abstract

Randomized block design field experiment to evaluate different methods of fertilizer application in two year old Pinus patula plantation was conducted at Paymund. Ooty. The treatment consisted of control (T_o) and fertilizer application (100 g urea+100 g superphosphate+25 g muriate of potash) by broadcast (T₁) intrench to full circumference equivalent to canopy diameter (T₂), and in trench to full circumference equivalent to canopy diameter (T₃) replicated 3 times. Intially broadcast application increased height growth. After 3 months, trench application to full circumference (T₃), was superior over other methods of fertilizer application.

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