Fertility studies of pasture soils in the wet tropical coast of Queensland. 6. Soils derived from beach sand

1973 ◽  
Vol 13 (62) ◽  
pp. 312 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Phosphorus Deficiency ◽  
Fertilizer Application ◽  
Potassium Deficiency ◽  
Beach Sand ◽  
Chemical Analyses ◽  
Calcium Treatment ◽  
Growth Studies ◽  
Tropical Coast

Plant growth studies and chemical analyses revealed severe and widespread deficiencies of phosphorus and copper, but in the case of phosphorus, deficiency is easily changed to toxicity by heavy fertilizer application. Potassium deficiency is less severe but fairly widespread. Calcium treatment functioned in different ways and produced both positive and negative responses. Other deficiencies recorded include zinc, molybdenum, sulphur, and boron.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 4. Soils derived from metamorphic rocks

1972 ◽  
Vol 12 (56) ◽  
pp. 281 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Phosphorus Deficiency ◽  
Aluminium Toxicity ◽  
Calcium Deficiency ◽  
Metamorphic Rocks ◽  
Calcium Treatment ◽  
Fertility Status ◽  
Tropical Coast

Results of fifteen investigations into the fertility status of soils derived from metamorphic rocks in the wet tropical coast of Queensland are presented. Phosphorus deficiency is general. Molybdenum and potassium deficiencies are also widespread. Significant plant growth increases in seven of the nine general nutritional experiments were brought about by the calcium treatment. However, the involvement of additional calcium in molybdenum release and in alleviating aluminium toxicity appears more important than in correcting a calcium deficiency. There were also some positive responses to sulphur and negative ones to copper.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 3. Basaltic soils

1972 ◽  
Vol 12 (54) ◽  
pp. 49 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Soil Nitrogen ◽  
Phosphorus Deficiency ◽  
Growth Responses ◽  
Nitrogen Status ◽  
Fertility Status ◽  
High Soil ◽  
Basaltic Soils ◽  
Tropical Coast

Results of thirteen investigations into the fertility status of fifteen basaltic soils in the wet tropical coast of Queensland are presented. Although farming experience has shown these soils to be among the most fertile in the area, a widespread phosphorus deficiency is recorded. Plant growth responses to molybdenum, sulphur and calcium also occurred. The molybdenum deficiency appears to be particularly important in older , pastures where the initailly high soil nitrogen status has been depleted.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 5. Mixed alluvial soils

1973 ◽  
Vol 13 (62) ◽  
pp. 306 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Nutritional Status ◽  
Phosphorus Deficiency ◽  
Alluvial Soils ◽  
Growth Responses ◽  
Wet Tropics ◽  
Growth Experiments ◽  
Tropical Coast

Results of sixteen plant growth experiments examining the nutritional status of mixed alluvial soils in the wet tropics are presented. A phosphorus deficiency is widespread and, in certain situations, extreme. Significant plant growth responses to calcium, copper, molybdenum, calcium + sulphur, magnesium + sulphur, and molybdenum + sulphur + manganese treatments were also recorded.

Isolasi dan Karakterisasi Bakteri Tanah Sawah di Kecamatan Medan Satria dan Bekasi Utara, Kota Bekasi, Jawa Barat

2017 ◽  
Vol 3 (4) ◽  
pp. 187 ◽  
Author(s):  
Arief Pambudi ◽  
Nita Noriko ◽  
Endah Permata Sari
Keyword(s):  
Plant Growth ◽  
Soil Bacteria ◽  
Rice Field ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fertilizer Application ◽  
Rice Production ◽  
Production Costs ◽  
Soil Conditions ◽  
Nitrogen Fixation Activity ◽  
Growth Promoting

<p><em>Abstrak -</em><strong> </strong><strong>Produksi padi di Indonesia setiap tahun mengalami peningkatan, namun peningkatan ini belum mampu memenuhi kebutuhan nasional sehingga impor masih harus dilakukan. Salah satu masalah dalam produksi beras adalah penggunaan pupuk berlebih yang tidak hanya meningkatkan biaya produksi, namun juga merusak kondisi tanah. Aplikasi bakteri tanah sebagai Plant <em>Growth Promoting Rhizobacteria</em> (PGPR) dapat menjadi salah satu solusi terhadap masalah ini. Penelitian ini bertujuan untuk mengisolasi bakteri tanah dari 3 lokasi sawah daerah Bekasi, membandingkan keberadaan total bakteri pada ketiga lokasi tersebut,  dan melakukan karakterisasi isolat berdasarkan karakter yang dapat memicu pertumbuhan tanaman. Dari ketiga lokasi, diperoleh total 59 isolat dan 5 diantaranya berpotensi sebagai PGPR karena kemampuan fiksasi Nitrogen, melarutkan Fosfat, katalase positif, dan motil. Dari ketiga lokasi pengambilan sampel, BK1 memiliki jumlah total bakteri terendah karena aplikasi pemupukan dan pestisida berlebih yang ditandai tingginya kadar P total, serta tingginya residu klorpirifos, karbofuran, dan paration. Kondisi fisik tanah BK1 juga didominasi partikel liat yang menyebabkan tanah menjadi lebih padat. Peningkatan jumlah penggunaan pupuk tidak selalu diikuti peningkatan produktivitas tanaman.</strong></p><p> </p><p><strong><em>Kata Kunci</em></strong><strong><em> </em></strong>- <em>Bakteri tanah, Rhizosfer sawah, PGPR, Pupuk Hayati</em></p><p><strong> </strong></p><p><em>Abstract</em><strong> - </strong><strong>Rice production in Indonesia has increased annually, but this increase has not reached national demand,so imports still done. </strong><strong>One of the problems in rice production is the use of excessive fertilizers that not only increase production costs, but also decreased the soil conditions. The application of soil bacteria as Plant Growth Promoting Rhizobacteria (PGPR) can be the one solution to face this problem. The objective of this study was isolate soil bacteria from 3 locations of rice field in Bekasi, compare the total bacteria in the three locations, and characterize isolates based on the character that can promote plant growth. From three locations, a total of 59 isolates were obtained and 5 of them were potential as a PGPRs due to its Nitrogen fixation activity, Phosphate solubilization, positive catalase, and motility. From three sampling sites, BK1 has the lowest TPC value because of excessive  fertilizers and pesticides application which indicated by high total P levels, and also high chlorpyrifos, carbofuran and paration residues. The physical condition of BK1 soil is also dominated by clay particles which causes the soil more solid. Increasing of fertilizer application is not always followed by increased plant productivity.</strong></p><p><strong> </strong></p><p><strong><em>Keywords</em></strong> - <em>Biofertilizer, PGPR, Rice field rhizosphere, Soil Bacteria</em></p>

Soybean Phosphorus and Potassium Deficiency Detection as Influenced by Plant Growth Stage

1988 ◽  
Vol 80 (4) ◽  
pp. 586-591 ◽  
Author(s):  
W. B. Hallmark ◽  
C. J. DeMooy ◽  
H. F. Mooris ◽  
John Pesek ◽  
K. P. Shao ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Stage ◽  
Potassium Deficiency ◽  
Phosphorus And Potassium

Philosophical Aspects of Measurements, Equations and Inferences in Plant Growth Studies

1986 ◽  
Vol 58 (1) ◽  
pp. 73-80 ◽  
Author(s):  
J. WARREN WILSON ◽  
R. HUNT ◽  
D. W. HAND
Keyword(s):  
Plant Growth ◽  
Growth Studies

scholarly journals Construction of Large Low Cost Filters for Plant Growth Studies

1960 ◽  
Vol 35 (5) ◽  
pp. 696-699 ◽  
Author(s):  
Saul Zalik ◽  
R. A. Miller
Keyword(s):  
Plant Growth ◽  
Low Cost ◽  
Growth Studies

scholarly journals Serapan Hara N, P, K dan Pertumbuhan Tanaman Jagung Pada Berbagai Dosis Pupuk Anorganik dan Organik di Tanah Inceptisol

2021 ◽  
pp. 55-66
Author(s):  
Mulyati Mulyati ◽  
Baharuddin AB ◽  
R Sri Tejo Wulan
Keyword(s):  
Plant Growth ◽  
Nutrient Uptake ◽  
Agronomic Traits ◽  
Block Design ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Organic Fertilizers ◽  
Randomized Block Design ◽  
Two Factors ◽  
Inorganic And Organic

The use of inorganic fertilizers has an important role in increasing plant growth and production. But it also causes various problems such as decreasing soil organic matter, soil acidity, soil degradation, nutrient imbalance and increasing environmental pollution. Therefore, it needs to be balanced with the provision of organic fertilizers. A field experiment was conducted to study the effect of application of various doses of inorganic and organic fertilizers on N, P, K nutrient uptake and maize plant growth. The experimental design used was a randomized block design arranged in a factorial manner consisting of two factors. The first factor is the dose of inorganic fertilizer (A): 0, 150 and 300 kg ha-1 phonska and the second factor is organic fertilizer plus (P): 0, 10, 20 tons ha-1. The two factors were combined and each treatment combination was repeated three times. The data obtained were analyzed by analysis of variance at the 5% level of significance. The results showed that there was no interaction between the application of inorganic and organic fertilizers on the growth and nutrient uptake of N, P and K. However, the application of inorganic and organic fertilizers had a significant effect on all tested agronomic traits except for plant height. Nutrient uptake of N, P and K also increased significantly due to the application of inorganic and organic fertilizers. The balance of inorganic and organic fertilizer application increases the availability of nutrients as well as the uptake of N, P, and K nutrients by maize plants.

Effects of Organic Fertilizer on Growth Performance and Postharvest Quality of Pak Choy (Brassica rapa subsp. chinensis L.)

2021 ◽  
Vol 1 (1) ◽  
pp. 43-50
Author(s):  
Nur Suhaida Mohamad ◽  
Faizah Abu Kassim ◽  
Norhanizan Usaizan ◽  
Azimah Hamidon ◽  
Zahir Shah Safari
Keyword(s):  
Plant Growth ◽  
Growth Performance ◽  
Block Design ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Leaf Length ◽  
Leafy Vegetables ◽  
Chicken Manure ◽  
Postharvest Quality

Long-term use of inorganic fertilizers on leafy vegetables can increase soil acidity, harmful to the environment and leaving bad effects on human health. Organic fertilizer application is one of the safer alternatives with many beneficial effects by supplying nutrients for plant growth, environmental-friendly and producing an optimum quality of vegetables. Different organic amendment such as vermicompost, biochar and microbial compost has different effect on plant growth performance since good bacteria could improve structure of the soil and nutrient absorption. Therefore, this study aims to evaluate the effects of organic fertilizer on the growth performance and postharvest quality. The experimental design during planting was conducted in randomized completely block design with a factorial arrangement of treatmentswhile for postharvest quality study was conducted in completely randomized design. Organic fertilizer of vermicompost (110 g/plant), biochar (100 g/plant), microbial compost (80 g/plant) and chicken manure (37.5 g/plant) were treated on Pak choy two times on day 10 and day 24 after transplant. This research revealed the plant growth including plant height, leaf number and leaf length of Pak choy in all treatments were increased as growing stage increased. However, at the end of growing stage, microbial compost and vermicompost resulted in the highest of growth characteristics. In terms of postharvest quality, microbial compost showed the highest fresh weight and premium quality. This study proved that microbial compost at 80 g/plant exhibited optimum growth performance and the best postharvest quality of Pak choy.

PENGARUH APLIKASI POC ( PUPUK ORGANIK CAIR ) URIN KAMBING DAN PESTISIDA ALAMI TERHADAP RESPON PERTUMBUHAN TANAMAN KACANG PANJANG ( Vigna sinensis L. ) BEDA VARIETAS DI DESA GUNUNG SELAMAT BILAH HULU LABUHAN BATU

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Sarah Kristi Pertiwi ◽  
Khairul Rizal ◽  
Yudi Triyanto
Keyword(s):  
Plant Growth ◽  
Community Service ◽  
Growth Response ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Organic Fertilizers ◽  
Vigna Sinensis ◽  
Pests And Diseases ◽  
Bean Plants ◽  
Natural Pesticides

AbstractThe Effect Of POC (Liquid Organic Fertilizer) Application Of Goat Urine And Natural Pesticides On The Growth Response Of Long Bean (Vigna Sinensis L.) Plant In Mountain Village Bilah Hulu Labuhan Batu, Sarah Kristi Pertiwi1, Khairul Rizal S.TP, M.Si2, Yudi Triyanto SP, M.Si3 Program Studi Agroteknologi, Fakultas Sains dan Teknologi Universitas Labuhanbatu. Long beans (Vigna sinensis L.)  are a vegetable plant as a source of vitamins and minerals. Long beans (Vigna sinensis L.)  are also a type of legume that is widely cultivated in Indonesia. Gunung Selamat Village is one of the villages with a variety of agricultural crops, one of which is long beans (Vigna sinensis L.). However, this community service was carried out because of the many problems faced by farmers, which caused the growth of long beans (Vigna sinensis L.)  to decline. The decline in production was caused, among others, by climate, soil, fertilizers, pests and diseases. Therefore, this community service is carried out to increase plant growth and reduce the use of synthetic fertilizers that can damage the soil ecosystem, therefore it is given the treatment of sprinkling liquid organic fertilizers on the soil and spraying vegetable pesticides from papaya leaves to prevent pests and diseases that attack long bean plants (Vigna sinensis L.). This treatment was designed to see the results of the growth rate response in long bean plants (Vigna sinensis L.). Keywords: Long Beans (Vigna sinensis L.), Liquid Organic Fertilizer, Natural Pesticides, Long Bean (Vigna sinensis L.) Plant Growth Response. AbstrakKacang Panjang (Vigna sinensis L.) merupakan salah satu tanaman sayuran sebagai sumber vitamin dan mineral. Kacang panjang (Vigna sinensis L.)  juga merupakan jenis kacang-kacangan yang banyak diusahakan di Indonesia. Desa Gunung Selamat merupakan salah satu desa dengan penghasilan tanaman palawija yang beragam salah satunya kacang panjang (Vigna sinensis L.). Namun, pengabdian masyarakat ini dilakukan karena banyak permasalahan yang dihadapi oleh petani sehingga menyebabkan pertumbuhan kacang panjang (Vigna sinensis L.)  menurun. Turunnya produksi ini antara lain disebabkan oleh iklim, tanah, pupuk, hama dan penyakit. Maka dari itu pengabdian masyarakat ini dilakukan untuk meningkatkan pertumbuhan tanaman serta mengurangi penggunaan pupuk sintetik yang dapat merusak ekosistem tanah, maka dari itu diberi perlakuan penyiraman pupuk organik cair pada tanah serta penyemprotan pestisida nabati dari daun pepaya untuk mencegah hama dan penyakit yang menyerang tanaman kacang panjang (Vigna sinensis L.). Perlakuan ini dibuat untuk melihat hasil respon tingkat pertumbuhan pada tanaman kacang panjang (Vigna sinensis L.).

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