Respons tanaman kedelai (Glycine max) varietas Wilis akibat pemberian berbagai dosis pupuk N, P, K, dan pupuk guano pada tanah Inceptisol Jatinangor

Abstract

Penelitian ini bertujuan untuk melihat apakah pemberian Pupuk Organik Padat Guano dapat memberikan hasil yang sama dengan pemberian Pupuk N,P,K. Percobaan dilakukan di Rumah Kaca Fakultas Pertanian Universitas Padjadjaran, Jatinangor dengan ketinggian 754m dpl dan menggunakan tanah inceptisol dengan pH 6,18.Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok, terdiri dari 8 perlakuan kombinasi dosis pupuk, yang terdiri dari 100% N,P,K, 100% Pupuk Guano, 75% N,P,K + 100% Pupuk Guano, 50% N,P,K + 100% Pupuk Guano, 75% N,P,K + 75% Pupuk Guano, 50% N,P,K + 75% Pupuk Guano, 75% N,P,K + 50% Pupuk Guano serta 50% N,P,K + 50% Pupuk Guano. Percobaan diulang sebanyak 4 kali, dengan demikian terdapat 32 satuan percobaan.Hasil penelitian menunjukkan bahwa pemberian beberapa dosis pupuk N,P,K dan pupuk guano memberikan pengaruh terhadap tinggi tanaman, bobot kering tanaman, biomassa tanaman, jumlah bintil akar efektif, jumlah polong isi per tanaman, jumlah polong hampa per tanaman, bobot biji per tanaman, bobot 100 biji, indeks panen, bobot biji per hektar. Perlakuan 50% N,P,K + 50% Pupuk Guano memberikan hasil yang tidak berbeda nyata dengan perlakuan kontrol pada tinggi tanaman, biomassa tanaman, indeks luas daun, jumlah daun, jumlah polong isi per tanaman, jumlah polong hampa per tanaman, bobot biji per tanaman, bobot 100 biji, indeks panen serta bobot biji per hektar.Kata Kunci : Tanaman Kedelai, Pupuk N,P,K, Pupuk Guano

Effects of Appropriate Composition of Sugarcane Bagasse Compost and Nitrogen Fertilizer on the Growth and Yield of Soybean (Glycine max L. Merill)

“…Weight increase of seeds per plant in the treatment of 75% compost + 25% urea, and 100% compost and 25% compost + 75% urea is presumably due to the availability of sufficient N nutrients in the treatment enabling optimal absorption and protein formation that have an impact on soybean seed growth. This is in line with the research of [6], pronouncing that NPK fertilizer combined with Guano fertilizer can meet the N needs of plants. N is an essential element for protein formation needed for soybean seed growth.…”

“…This is due to the fact that the given the nutrient composition of sugar cane bagasse fertilizer and urea fertilizer can provide enough nutrients (especially N) for vegetative growth of plants. On this account, [6] highlighted that fertilizer N, P, K which were applied with the composition of guano fertilizer could boost the height of soybean crops. Compost has a slow release, while inorganic fertilizer is quickly released This explains why, in the first to seventh week, the plant does not experience any nutrient deficiencies.…”

“…Also it is assumed that the the treatment using 75% compost + 25% urea is the appropriate composition that can increase soil fertility to optimize the growth and yield of soybean plants. According to [6] organic composting combined with N, P and K fertilizers is a longterm sustainable nutrient management to improve the quality of soil fertility to subsequently raise the yield of legumes. Tables Table 1.…”

Peranan FMA Glomus sp. dan Pupuk Anorganik terhadap Produktivitas Tanaman Kedelai (Glycine max (L.) Merrill) var. Lokal Bali

“…Adanya tambahan unsur hara pada media tanam dari pupuk NK dan FMA dapat membantu pertumbuhan dan perkembangan tanaman. Ayunita et al (2014) menyatakan, unsur P yang didapat dari FMA berperan dalam aktivitas fotosintesis, sehingga meningkatnya hasil fotosintesis menyebabkan proses pematangan polong cepat dan unsur K dari pupuk anorganik berperan memacu pengangkutan karbohidrat dari daun ke organ tanaman lainnya, sehingga hasil fotosintesis dapat digunakan dengan baik, diantaranya pembentukan polong (Subandi 2013, Wahyudin et al 2017. Jumlah polong isi terendah pada perlakuan E yang dapat terjadi karena penggunaan pupuk yang berlebihan, sehingga pertumbuhan kedelai terganggu.…”

Soybean Disease Detection with Feature Selection Using Stepwise Regression Algorithm: LVQ vs LVQ2

“…Soybean plants (Glycine max L. Merr) is one of the food crops that have been long cultivated by the people of Indonesia. This plant has an important meaning to fulfill food needs in the context of improving community nutrition, because it is a source of vegetable protein which is relatively inexpensive compared to other protein sources such as meat, milk and fish [1] [2].…”