Effect of biofertilizers application on growth and production of cherry tomatoes (Solanum lycopersicum var. cerasiforme) von Widjajanto, D. W., Sumarsono, Purbajanti, E. D.

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Growth And Production of Lowland Rice Due to Soil Ameliorant Application on Andosol, Mediterranean And Alluvial Soil von Sumarsono, Widjajanto, D W, Sumekar, W

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The level of organic rice farming technology at farmer group in Ketapang village, Susukan sub-district, Semarang district, Central Java Province, Indonesia von Sumarsono, Yafizham, Widjajanto, D W

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Soil problems in China and its lessons for other developing countries von Chen, N, Widjajanto, D W, Zheng, Y

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Produksi dan Kualitas Rumput Gajah Varietas Odot (Pennisetum purpureum cv. Mott) pada Sistem Tumpangsari dengan Ubi Jalar Kuning (Ipomoea batatas L.) von Nurudin, Muhhamad Arif, Widjajanto, D. W., Sumarsono, -

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Effect of Silicate Fertilizer on the Growth and Yield of Two Local Indonesian Varieties of Rice (Oryza sativa L.) von Widjajanto, D.W., ., Sumarsono, Purbajanti, Endang Dwi

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17-5 The release of N from Water hyacinth incorporated into soil-crop systems von Widjajanto, D. W., Honmura, T., Miyauchi, N.

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