Growth and production of soybean (Glycine max (L.) Merill) with different fertilizer strategies in a tidal soil from South Sumatra, Indonesia

Abstract

The efforts to improve soybean growth and production in tidal lands include applying lime, supplying some nutrients, and using improved varieties. The objective of this study was to find the effect of lime and NK fertilizer application for soybean (<em>Glycine max </em>(L.) Merill)<em> </em>growth in tidal land. The research was conducted at the greenhouse of the Agriculture Faculty of Sriwijaya University. The pot experiments used a complete randomized design arranged factorially with two factors. The first factor was six levels of lime (i.e., 0 ton ha<sup>-1</sup>, 0.81 tons ha<sup>-1</sup>, 1.63 tons ha<sup>-1</sup>, 2.45 tons ha<sup>-1</sup>, 3.26 tons ha<sup>-1</sup>, and 4.07 tons ha<sup>-1</sup>),and the second factor was two levels of fertilizer (i.e., site-specific fertilizer and fertilizer calculated based on FAO criteria) and fertilizer recommended by South Sumatera Agricultural Research. Each treatment combination was made of three replications; the total number of treatment pots was 36. The measured variables were plant height, number of pods, number of nonempty pods, number of seeds, weight of 100 seeds, and production. The results showed that liming significantly increased plant height, total number of pods, number of nonempty pods, number of seeds, weight of 100 seeds, and soybean production, while fertilizer did not significantly affect all variables. The interaction between fertilizer and lime significantly affected plant height and the weight of 100 seeds. Lime application of 3.26 tons ha<sup>-1</sup> gave the highest yield on lime treatment only with production at 2.853 tons ha<sup>-1</sup> compared to other treatments.

Pemberian Pupuk Anorganik Dan Vermikompost Untuk Pertumbuhan Kedelai Di Tanah Pasang Surut

“…Salah satunya tujuan pengembangan tanaman kedelai adalah lahan pasang surut. Budianta et al (2019) telah melaporkan bahwa kedelai dapat tumbuh di lahan pasang surut dengan produksi sekitar 2.85 tons ha -1 yang dikapur dengan dosis 3.26 ton ha -1 .…”

“…Tanah pasang surut yang digunakan untuk media tumbuh kedelai merupakan tanah sulfat masam dari tipologi C yang mempunyai pH 3.76 (sangat masam), N 0.12 g kg -1 (rendah), P-Bray 37 mg kg -1 (sangat tinggi), Kdd 0.38 Cmol(+) kg -1 (rendah) dan tekstur tanah termasuk lempung liat berpasir dengan persentase pasir 54.4 %, debu 25.6 % dan liat 20 % (Tabel 1). Budianta et al (2019) melaporkan bahwa tanah pasang surut yang tipologi D mempunyai pH agak lebih tinggi walau masih bersifat masam dengan nilai 4.55, dimana tipologi C dan D sama karakteristiknya hanya beda pada kedalaman muka air tanah (tipologi C kedalaman muka air tanah kurang dari 50 cm sedangkan tipologi D kedalaman muka air tanah lebih dari 50 cm, kedua tipologi tersebut sama-sama kering lahannya). Menurut Pusat Penelitian Tanah ( 2009), tanah tersebut tergolong tanah sangat masam (strong acidity).…”

“…Polong yang diperoleh pada saat panen cukup banyak, dikarenakan tingginya produktivitas tanaman akibat pemberian pupuk vermikompos dan pupuk N, P, K. Tingginya hasil kedelai, dapat dipengaruhi oleh tersedianya unsur hara di dalam tanah sehingga dapat tercukupinya nutrisi tanaman. Budianta et al (2019),…”

Influence of Membership Function and Degree on Sorghum Growth Prediction Models in Machine Learning

“…Sorghum is an alternative crop suitable for planting in less fertile areas, such as tidal land. Suboptimal tidal swamp land has low fertility, an acidic pH, and low nutrients [2]. Sorghum plants can also be used for food diversification other than rice to maintain food security in Indonesia.…”