Pengaruh Jenis Amelioran dan Residunya terhadap Produksi Pakcoy dengan Fertigasi melalui Irigasi Tetes

Abstract

Penurunan produksi pakcoy di Indonesia dapat dipengaruhi oleh kesuburan tanah yang kurang diperhatikan, diperlukan upaya peningkatan produksi melalui pengelolaan kesuburan tanah dan teknik budi daya yang tepat. Penelitian bertujuan menganalisis pengaruh jenis amelioran dan residunya serta mengevaluasi amelioran yang paling efektif terhadap pertumbuhan, hasil, Nutrient Use Efficiency, dan Water Use Efficiency pada pakcoy dengan fertigasi melalui irigasi tetes. Penelitian menggunakan rancangan kelompok lengkap teracak faktor tunggal dengan tujuh perlakuan amelioran yaitu kontrol, dolomit, pupuk kandang, pupuk hayati, dolomit+pupuk kandang, dolomit+pupuk hayati, dan dolomit+pupuk kandang+pupuk hayati pada tanah Inceptisol dengan pH netral, P dan K tersedia tinggi, dan C-Organik rendah, didapatkan dosis rekomendasi FERADS dolomit 1800 kg ha-1, pupuk kandang 48.272 kg ha-1, pupuk hayati 300 L ha-1. Hasil menunjukkan amelioran tidak berpengaruh terhadap tinggi tanaman dan jumlah daun pada kedua musim tanam serta luas daun penanaman kedua, tetapi berpengaruh terhadap luas daun penanaman pertama, bobot akar, bobot hasil, NUE, dan WUE. Pupuk hayati tunggal merupakan perlakuan terbaik dalam meningkatkan hasil, NUE, dan WUE pada kedua musim tanam. Pupuk hayati kombinasi tidak berbeda dengan pupuk hayati tunggal pada penanaman pertama, tetapi dolomit+pupuk hayati menghasilkan nilai rendah berbeda nyata pada penanaman kedua. Residu amelioran masih berpengaruh pada penanaman kedua, meskipun efektivitasnya menurun.

Declining pakcoy production in Indonesia is associated with inadequate soil fertility management, highlighting importance of proper soil improvement and cultivation practices. This study aimed to analyze the effects of different ameliorants and their residual effects, as well as to identify the most effective ameliorant for enhancing growth, yield, Nutrient Use Efficiency, and Water Use Efficiency of pakcoy under drip fertigation. Experiment used randomized complete block design with single factor consisting of seven treatments: control, dolomite, manure, biofertilizer, dolomite+manure, dolomite+biofertilizer, and dolomite+manure+biofertilizer on an Inceptisol soil characterized by neutral pH, high available phosphorus and potassium, and low organic carbon content. Recommended application rates based on FERADS were 1,800 kg ha?¹ dolomite, 48,272 kg ha?¹ manure, and 300 L ha?¹ biofertilizer. The results showed that ameliorants did not significantly affect plant height, leaf number in both growing seasons, or leaf area in the second season. However, significant effects were observed on leaf area in the first season, root weight, yield, NUE, and WUE. Biofertilizer alone was the most effective treatment for improving yield, NUE, and WUE in both growing seasons. Residual ameliorant effects were still evident in the second season, although their effectiveness declined.