Response of peanut to different rates and sources of P fertilizer on red yellow podzolic soil
1992
Murtado (Balai Penelitian Tanaman Pangan, Bogor (Indonesia). Kelompok Peneliti Fisiologi)
Response of peanut to different rates and sources of P fertilizers on a red yellow podzolic soil. A field experiment was conducted to study the response of peanut variety Gajah to different rates and sources of P fertilizer, on a red yellow podzolic soil at Cigudeg, Bogor from February to June 1990. The treatments consisted of 0 (control), 45, 90, 135, and 180 kg P2O5/ha respectively in the form of TSP and rock phosphate (RP-HR). They were arranged in a randomized complete block design with three replications. It was found that TSP was more effective in promoting plant growth, yield and yield component of peanut than RP-HR. TSP applications increased plant height, shoot dry-matter weight, number of pods and seeds and dry weight of pods and seeds compared to those of plant control, as high as 62,3 percent, 39,3 percent, 32,2 percent, 41,3 percent, and 56,3 percent, respectively. Rock phosphate (RP-HR) also promoted plant growth and yield of peanut, but less than that TSP. The increase in pod yield/ha due to TSP and RP-HR application was 77,6 percent and 38,2 percent, respectively. A significant linear plateau correlation between yield of peanut and P application for both TSP and RP-HR was found. The equation formula is available in this article.
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