scholarly journals Characterization of nutrient deficiency in Hancornia speciosa Gomes seedlings by omitting micronutrients from the nutrient solution

2013 ◽  
Vol 35 (2) ◽  
pp. 616-624 ◽  
Author(s):  
Layara Alexandre Bessa ◽  
Fabiano Guimarães Silva ◽  
Marialva Alvarenga Moreira ◽  
João Paulo Ribeiro Teodoro ◽  
Frederico Antônio Loureiro Soares
Keyword(s):  
Nutrient Solution ◽  
Block Design ◽  
Solution Treatment ◽  
Nutrient Deficiency ◽  
Dry Weight ◽  
Stem Length ◽  
Visual Symptoms ◽  
Randomized Block Design ◽  
Hancornia Speciosa ◽  
Complete Nutrient Solution

Hancornia speciosa Gomes (Mangaba tree) is a fruit tree belonging to the Apocynaceae family and is native to Brazil. The production of seedlings of this species is limited by a lack of technical and nutritional expertise. To address this deficiency, this study aimed to characterize the visual symptoms of micronutrient deficiency and to assess growth and leaf nutrient accumulation in H. speciosa seedlings supplied with nutrient solutions that lack individual micronutrients. H. speciosa plants were grown in nutrient solution in a greenhouse according to a randomized block design, with four replicates. The treatments consisted of a group receiving complete nutrient solution and groups treated with a nutrient solution lacking one of the following micronutrients: boron (B), copper (Cu), iron (Fe), manganese (Mn), zinc (Zn), and molybdenum (Mo). The visual symptoms of nutrient deficiency were generally easy to characterize. Dry matter production was affected by the omission of micronutrients, and the treatment lacking Fe most limited the stem length, stem diameter, root length, and number of leaves in H. speciosa seedlings as well as the dry weight of leaves, the total dry weight, and the relative growth in H. speciosa plants. The micronutrient contents of H. speciosa leaves from plants receiving the complete nutrient solution treatment were, in decreasing order, Fe>Mn>Cu>Zn>B.

scholarly journals Pertumbuhan Batang Pada Beberapa Varietas Kedelai (Glycine max (L.) Merr) Terhadap Jenis Tanah Aluvial, Regosol Dan Latosol

2020 ◽  
Vol 13 (01) ◽  
pp. 24-32
Author(s):  
Kurniawan M.R.D ◽  
P. S. Ajiningrum
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Stem Length ◽  
Test Results ◽  
Hypocotyl Length ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Different Types ◽  
Glycine Max L ◽  
Soybean Plants

This study aims to determine the growth of 10 superior soybean varieties planted in 3 different types of soil (alluvial, regosol and latosol) and to find out whether the 3 types of soil give an effect to the growth of 10 superior soybean varieties viewed from 4 parameters (hypocotyl length, length epicotiles, stem length and stem dry weight).This study used a Randomized Block Design (RBD) consisting of 10 varieties of soybean plants (anjasmoro, argomulyo, detam 1, detam 3 prida, detam 4 prida, detap 1, devon 1, devon 2, yellow gepak and deja 1) and 3 types of soil (alluvial, regosol, and latosol) was repeated 2 times. Data were analyzed using the two-way ANAVA 5% test and the 5% DMRT test. The results showed a significant difference in soybean growth. The best soybean varieties in hypocotyl length are Devon 2, in epicotile length are Anjasmoro, Devon 1 and Devon 2, the stem length and dry weight of the stem are Detap 1. The DMRT test results state that all three soil types (alluvial, regosol and latosol) have influence on the parameters of hypocotyl length and epicotyl length, whereas the parameters of stem length and plant dry weight have no effect.   Keywords: Soybean, Variety, Growing test  

scholarly journals Effect of Saline Stress and Calcium Nitrate on Lettuce Grown on Coconut Fiber

2018 ◽  
Vol 10 (11) ◽  
pp. 259
Author(s):  
Francisco de A. de Oliveira ◽  
Isabelly C. da S. Marques ◽  
Ana Jacqueline de Oliveira Targino ◽  
Carla J. X. Cordeiro ◽  
Mychelle K. T. de Oliveira ◽  
...  
Keyword(s):  
Leaf Area ◽  
Nutrient Solution ◽  
Block Design ◽  
Calcium Nitrate ◽  
Dry Weight ◽  
Saline Stress ◽  
Coconut Fiber ◽  
Randomized Block Design ◽  
Leaf Succulence ◽  
Nutrient Solutions

This study aimed to evaluate the use of saline solutions enriched with calcium nitrate in the production of lettuce grown in coconut fiber. The experiment was carried out from July to August 2017 in a greenhouse, at the Federal Rural University of the Semi-Arid Region (UFERSA), Mossoró-RN, Brazil. A randomized block design was used, in 2 × 5 factorial scheme, with three replicates. Treatments resulted from the combination of two lettuce cultivars [Elba (Curly) and Irene (Crisphead)] and five nutrient solutions (S1- standard nutrient solution; S2-S1 + NaCl (28.48 mmol L-1); S3-S2 + Ca(NO3)2 (6.89 mmol L-1); S4-S2 + Ca(NO3)2 (9.15 mmol L-1); S5-S2 + Ca(NO3)2 (11.43 mmol L-1)]. Plants were harvest 30 days after transplantation and the following variables were analyzed: head diameter, stem diameter, number of leaves, fresh weight, dry weight, leaf area, specific leaf area and leaf succulence. The cv. Irene (Crisphead) is more tolerant to nutrient solution salinity compared with the cv. Elba (Curly). Nutrient solutions enriched with 50 and 100% of Ca(NO3)2 promoted better performance of the cultivars Elba and Irene, respectively, fertigated with saline nutrient solution.

scholarly journals Uji daya hasil jamur tiram putih (Pleurotus ostreatus) akibat aplikasi jenis nutrisi alternatif dengan pendekatan bioklimatik di kabupaten Karawang

Kultivasi ◽  
2019 ◽  
Vol 18 (3) ◽  
Author(s):  
Rommy Andhika Laksono Andhika Laksono
Keyword(s):  
Block Design ◽  
Liquid Waste ◽  
Dry Weight ◽  
Oyster Mushroom ◽  
Stem Length ◽  
Agricultural System ◽  
Potato Peel ◽  
Randomized Block Design ◽  
Two Factors ◽  
Peel Extract

Sari Karawang merupakan wilayah di Jawa Barat yang sangat potensial dalam pengembangan budidaya jamur tiram putih. Salah satu usaha penerapan sistem pertanian yang berkelanjutan atau sistem pertanian yang peduli lingkungan dapat dilakukan dengan pemanfaatan nutrisi alternatif dan modifikasi bioklimatik. Penelitian ini bertujuan untuk mendapatkan jenis nutrisi alternatif terbaik yang mampu memberikan produksi jamur tiram putih tertinggi pada setiap posisi baglog. Penelitian dilakukan di kumbung percobaan Fakultas Pertanian UNSIKA, Kabupaten Karawang, dari bulan Januari sampai dengan bulan Agustus 2018. Metode penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) faktorial. Perlakuan terdiri dua faktor, yaitu jenis nutrisi alternatif dan posisi baglog. Faktor jenis nutrisi alternatif terdiri dari 5 taraf, yaitu aquades 100%, air leri 80%, ekstrak kulit kentang 40%, ekstrak tauge 60%, dan air kelapa tua 60%, sementara faktor posisi baglog terdiri dari 2 taraf, yaitu vertikal dan horizontal. Perlakuan diulang sebanyak 4 kali. Hasil penelitian menunjukan terdapat pengaruh interaksi antara jenis nutrisi alternatif dan posisi baglog selama 1 periode tanam (8 minggu) terhadap jumlah rumpun jamur per baglog, jumlah tudung jamur per rumpun, diameter tudung jamur maksimal per baglog, panjang batang jamur maksimal  per baglog  , bobot segar jamur per baglog, bobot kering jamur per baglog, serta intensitas panen per baglog. Pada posisi baglog vertikal, jenis nutrisi terbaik adalah air leri 80%. Pada posisi baglog horizontal, jenis nutrisi terbaik adalah ekstrak tauge 60%.Kata Kunci: Jamur tiram putih, nutrisi organik, posisi baglog  Abstract. Karawang is a region in West Java that is very potential in developing white oyster mushroom cultivation. One of the efforts to implement a sustainable agricultural system or an environmentally friendly agricultural system can be done by alternative nutrients application and bioclimatic modifications. This study aimed to obtain the best alternative nutrients that were able to provide the highest production of white oyster mushrooms in each baglog positions. The study was carried out at the experimental field of the Faculty of Agriculture, UNSIKA, Karawang, from January to August 2018. The research method used factorial randomized block design (RBD). Treatments were consisted of two factors. There were types of alternative nutrient and baglog position, which was repeated 3 times. Types of alternative nutrient consisted of 5 levels: 100% aquadest, 80% liquid waste from rice washing, 40% potato peel extract, 60% bean sprouts extract,  and 60% old coconut water, while baglog position consisted of vertical and horizontal positions. The results showed that there was an interaction effect between alternative nutrient types and the positions of baglog for 1 planting period (8 weeks) on the number of mushroom clumps per baglog, number of mushroom caps, maximum mushroom hood diameter per baglog, maximum mushroom stem length per baglog, fresh weight mushrooms per baglog, mushroom dry weight per baglog, and crop intensity per baglog. In the vertical baglog position, the best type of nutrient was 80% liquid waste from rice washing. In the horizontal baglog position, the best type of nutrient was 60% bean sprout extract. Keywords: Baglog position, organic nutrient, White oyster mushroom

scholarly journals Characterization of the effects of macronutrient deficiencies in mangabeira seedlings

2012 ◽  
Vol 34 (4) ◽  
pp. 1235-1244 ◽  
Author(s):  
Layara Alexandre Bessa ◽  
Fabiano Guimarães Silva ◽  
Marialva Alvarenga Moreira ◽  
João Paulo Ribeiro Teodoro ◽  
Frederico Antônio Loureiro Soares
Keyword(s):  
Nutrient Solution ◽  
Dry Matter ◽  
Developmental Stages ◽  
Block Design ◽  
Morphological Alterations ◽  
Federal Institute ◽  
Random Block ◽  
Random Block Design ◽  
The Individual ◽  
Hancornia Speciosa

Knowledge of the mineral nutrition requirements of mangabeira (Hancornia speciosa Gomes) is relatively scarce and rudimentary because there is a lack of consistent data concerning its nutritional demands at different developmental stages. The aim of this research was to characterize the visual symptoms of macronutrient deficiencies and to evaluate the effects of these deficiencies on the growth, the production of dry matter, and the leaf content of mangabeira. To achieve this goal, a greenhouse experiment was conducted at the Goiano Federal Institute (Instituto Federal Goiano) in Rio Verde - GO, from January to June 2011 in which mangabeira plants were arranged in a random block design and grown in nutrient solutions. This experiment was replicated four times. The plants were treated with either a complete nutrient solution or a nutrient solution from which the individual macronutrient of interest (nitrogen (N), phosphorous (P), potassium (K), magnesium (Mg), calcium (Ca), or sulfur (S) had been omitted. The omission of a macronutrient from the nutrient solution resulted in morphological alterations that were characteristic symptoms of the particular nutritional deficiency and caused decreases in growth and dry matter mass production. The accumulation of macronutrients displayed the following order in mangabeira leaves: N>K>Ca>P>S>Mg.

scholarly journals Agronomic performances of Pak Choi grown with different soil cover

2015 ◽  
Vol 33 (2) ◽  
pp. 261-266 ◽  
Author(s):  
Márcia M Echer ◽  
Graciela M Dalastra ◽  
Tiago L Hachmann ◽  
Elcio S Klosowski ◽  
Vandeir F Guimarães
Keyword(s):  
Soil Cover ◽  
Block Design ◽  
Dry Weight ◽  
Bare Soil ◽  
Production Traits ◽  
Pak Choi ◽  
Randomized Block Design ◽  
Black Plastic ◽  
Growing Conditions ◽  
Set Up

An important aspect in the cultivation of vegetables is the quality of the product to be marketed, free from dirt and damage and the practice of mulching could be an option, but there is scarse information. The aim of this study was to evaluate the influence of mulching on the production traits of three cultivars of Pak Choi. The experiment was set up during March to May 2013 using a split plot randomized block design, with four replications. Soil cover treatments (white agrotextile, black agrotextile, black plastic, silver plastic, tifton straw and bare soil) were arranged in the plots, and three cultivars of Pak Choi (Green Pak Choi, White Pak Choi and Chingensai Natsu Shomi) in subplots. Height and diameter of shoots, number of leaves, fresh weight of the head and petiole, base diameter, dry weight of stem, petiole, and leaf were evaluated thirty-five days after transplantation. The total dry weight and leaf area were measured, and then we estimated the yield. There was a significant effect of soil cover and cultivar. In general, the cover with synthetic materials showed higher values on production of Pak Choi. The cultivar White Pak Choi was better adapted to the growing conditions, with an average yield of 57.78 t/ha.

scholarly journals PENGARUH JARAK TANAM DAN DOSIS PUPUK NPK MAJEMUK TERHADAP PERTUMBUHAN, PRODUKSI BUNGA, DAN ANALISIS USAHA TANI ROSELA MERAH

2020 ◽  
Vol 18 (1) ◽  
pp. 17
Author(s):  
BUDI SANTOSO ◽  
UNTUNG SETYO-BUDI ◽  
ELDA NURNASARI
Keyword(s):  
Production Cost ◽  
Block Design ◽  
Market Price ◽  
Dry Weight ◽  
Hibiscus Sabdariffa ◽  
Plant Spacing ◽  
Fresh Weight ◽  
Compound Fertilizer ◽  
Randomized Block Design ◽  
Growth Production

<p>ABSTRAK<br />Penelitian mengenai jarak tanam dan pemupukan untuk tanaman<br />rosela merah (Hibiscus sabdariffa var. sabdariffa) belum banyak dilakukan.<br />Suatu penelitian, yang dilakukan di Desa Kanyoran, Kecamatan Semen,<br />Kabupaten Kediri pada tahun 2010, bertujuan untuk mendapatkan jarak<br />tanam dan dosis pupuk NPK majemuk yang tepat bagi pertumbuhan serta<br />produksi kelopak bunga rosela merah dan analisis usaha tani. Perlakuan<br />disusun dalam rancangan acak kelompok faktorial dengan 3 ulangan.<br />Sebagai faktor pertama adalah 3 ukuran jarak tanam yang terdiri atas 1) 80<br />x 50 cm; 2) 100 x 50 cm; dan 3) 120 x 50 cm; dan sebagai faktor kedua<br />adalah 5 dosis pupuk NPK majemuk yang terdiri atas a) 30 kg NPK/ha; b)<br />37,50 kg NPK/ha; c) 45 kg NPK/ha; d) 52,50 kg NPK/ha; dan e) 60 kg<br />NPK/ha. Hasil penelitian menunjukkan bahwa terjadi interaksi antara jarak<br />tanam (100 x 50 cm) dengan dosis pupuk (45 kg NPK/ha) yang<br />memberikan pertumbuhan tinggi tanaman, jumlah cabang produktif,<br />jumlah buah, bobot kelopak bunga berbiji, bobot biji, bobot basah kelopak<br />bunga tanpa biji, dan bobot kelopak bunga kering maksimal, masing-<br />masing sebesar 186,63 cm; 16,33 cabang; 117,00 buah; 41,33 kg/petak;<br />16,17 kg/petak; 26,67 kg/petak; dan 2,35 kg/petak (652,75 kg/ha). Usaha<br />tani rosela merah memberikan keuntungan sebesar Rp 10.420.000/ha<br />dengan B/C = 1,49. Harga pokok kelopak bunga kering sebesar<br />Rp13.031/kg lebih kecil dibanding harga pasar (Rp 40.000/kg), dan dapat<br />dijamin tidak akan terjadi kerugian bagi petani<br />Kata kunci : Hibiscus sabdariffa var. sabdariffa, jarak tanam, pupuk NPK<br />majemuk, pertumbuhan, produksi</p><p>ABSTRACT<br />There has been no research program on plant spacing and fertilization on<br />red roselle plant (Hibiscus sabdariffa var. sabdariffa) up to 2010. A study<br />conducted in Desa Kanyoran, Kecamatan Semen, Kediri in 2010, aimed at<br />getting appropriate plant spacing and NPK compound fertilizer dosage for<br />growth and calyx production of red roselle, as well as its farm analysis.<br />The experiment was arranged in a factorial randomized block design with<br />three replicates. As the first factor were 3 dimensions of plant spacing<br />consisting of 1) 80 x 50, 2) 100 x 50, and 3) 120 x 50 cm, and the second<br />factor were 5 doses of NPK compound fertilizer consisting of a) 30, b)<br />37.50, c) 45, d) 52.50, and e) 60 kg NPK/ha. The results showed that there<br />was an interaction between plant spacing (100 x 50 cm) with fertilizer<br />dosage (45 kg NPK/ha), which resulted in plant height, number of<br />productive branches, number of fruits, weight calyx with seed, seed<br />weight, fresh weight of seedless calyx, and maximum dry weight of calyx,<br />each amounting to 186.63 cm; 16.33 branches; 117.00 fruits; 41.33<br />kg/plot; 16.17 kg/plot; 26.67 kg/plot; and 2.35 kg/plot (652.75 kg/ha),<br />respectively. Red roselle farm provided a gain of Rp10,420,000/ha with a<br />B/C of 1.49. Production cost of dried calyx was Rp13,031/kg, lower than<br />market price (Rp 40,000/kg), and was guaranteed to be no loss to farmers.<br />Key words: Hibiscus sabdariffa var. sabdariffa, plant spacing, NPK<br />compound fertilizer, growth, production</p>

scholarly journals Response of St John’s wort (Hypericum empetrifolium) plants to cadmium (Cd) treatment in relation to substrate acidity/alkalinity

2021 ◽  
Vol 49 (2) ◽  
pp. 12321
Author(s):  
Anastasia AKOUMIANAKI-IOANNIDOU ◽  
Alexandra SALTA ◽  
Pantelis E. BAROUCHAS ◽  
Nicholas K. MOUSTAKAS
Keyword(s):  
Block Design ◽  
Nutrient Deficiency ◽  
Development Rate ◽  
Contaminated Sites ◽  
Cd Accumulation ◽  
Medical Products ◽  
St John’S Wort ◽  
St John's Wort ◽  
Randomized Block Design ◽  
Acid Substrate

The effect of cadmium (Cd) on growth and Cd accumulation in shoots and roots St John’s wort (Hypericum empetrifolium) was studied over three months in a greenhouse. Plants were cultivated in pots containing a uniform mixture of either acid or alkaline substrate consisting of peat and perlite (1:1 v/v). The pots were arranged in a completely randomized block design within two groups (acid substrate and alkaline substrate) with four Cd treatments (0-control, 1, 2, and 5 mg Cd L-1) and six replicates per treatment. Cadmium was applied as CdSO4*8/3H2O. The total amount of Cd applied per pot was 260 ml, corresponding to 0.26, 0.52, and 1.3 mg Cd per pot for doses 1, 2, and 5 mg L-1, respectively. No visual symptoms of toxicity or nutrient deficiency, as well as no differences in plant height were observed in response to Cd application, irrespective of the growth stage or substrate. There were also no differences in height development rate between the plants grown in an acidic or alkaline substrate. Cd accumulation in shoots and roots increased with increasing concentrations of applied Cd and was higher in the acidic substrate. Thus, St John’s wort plant is a Cd accumulator, especially in an acidic environment, and this in combination with its high tolerance to Cd, makes it a suitable species to remove Cd from cadmium-contaminated sites. However, for its use in the preparation of medical products, St John’s wort must be grown in a Cd-free soil so as not to pose a risk to human health. Cd extraction by (DTPA-TEA) can be employed to predict Cd accumulation in this plant.

scholarly journals Pertumbuhan dan Produksi Dioscorea sansibarensis Pax pada Perlakuan Panjang lanjaran dan Waktu Batang Membelit*

2018 ◽  
Vol 45 (3) ◽  
pp. 249
Author(s):  
Solikin ,
Keyword(s):  
Block Design ◽  
Soil Surface ◽  
Dry Weight ◽  
Growth And Yield ◽  
Botanic Garden ◽  
Randomized Block Design ◽  
Two Factors ◽  
Main Plot ◽  
Total Plant ◽  
Total Dry Weight

Dioscorea is potentially used as staple food to support food security. The research was aimed to determine the effect of stake length and time of  stem twining  on  the growth of Dioscorea sansibarensis Pax. The experiment was conducted  in  Purwodadi Botanic Garden from December 2014 until May 2015 using split plot randomized block design consisted of two factors, i.e. the stake length and time of stem twining. The stake length was the main plot consisted of 150 cm, 100 cm and 50 cm above soil surface and without stake (control). The time of stem twining as subplots, i.e. stem twined early, twined at the time of 4 leaves stage, and twined at 8 leaves stage. Each combination of the treatments was replicated three times. The results showed that there was significant effect on the stake length  and the time of stem twining treatments on the plant growth and yield. The stake  length of 150 cm treatment produced the highest fresh tuber and total plant dry weight, i.e., 257.24 g and 132.77 g per plant, respectively. On the contrary, the plant without stake produced the lowest fresh tuber and  total dry weight of plant, i.e., 112.10 g and 48.65 g per plant, respectively.<br /><br />Keywords: biomass,leaf area, photosyntesis, tuber weight

scholarly journals Cekaman Garam NaCl danTeknik Aplikasi Azolla pada Tanaman Padi

2020 ◽  
Vol 25 (3) ◽  
pp. 349-355
Author(s):  
Fitri Krismiratsih ◽  
Sugeng Winarso ◽  
Slamerto Slamerto
Keyword(s):  
Salt Stress ◽  
Block Design ◽  
Ground Cover ◽  
Dry Weight ◽  
Soil Conditions ◽  
Application Technique ◽  
Rice Plants ◽  
Root Dry Weight ◽  
Randomized Block Design ◽  
Salinity Levels

Efforts to increase production potential can be carried out by extensification in a less productive saline land. Salinity is a major problem in the growth of most plants. Azolla is a plant that is sensitive to salinity, but if it is applied well, it can grow optimally at high salinity levels. The purpose of this study is to obtain an azolla application technique that is effective in increasing the adaptation of rice plants to NaCl saline soil conditions. The experimental design used was Randomized Block Design (RBD) with 2 factors and 3 replications. The first factor was the azolla application technique consisted of 3 levels: fresh azolla composted, fresh azolla immersed, and fresh azolla as a ground cover. The second factor was the levels of NaCl salt stress consisted of 4 levels: control DHL 0, 2, 4, and 8 dS m-1. The adaptation ability of rice plants based on variable plants height growth rate, number of tillers, strove dry weight, root dry weight, stomata density, leaf chlorophyll (SPAD), age of flowering, number of paddy grain, and harvest index. The results showed how to test content up to 2 dS m-1 which increased rice growth especially the application of azolla composted. Increasing stress to 4 and 8 dS m-1showed bad effects on vegetative, physiology, and yields of rice components. The stronger of salt stress the higher all plants growth variables except the age of flowering that actually showed the acceleration of flowering. Application of composted azolla can increase the root dry weight and azolla as a ground cover can increase the numbers of paddy grains.   Keywords: azolla, NaCl, rice, stress

scholarly journals Determination of the Optimum Rate of N Fertilizers with Addition of Goat Manure for Production of Cowpea (Vigna unguiculata [L.] Walp)

2019 ◽  
Vol 6 (02) ◽  
pp. 121-128
Author(s):  
Devi Liana ◽  
Heni Purnamawati ◽  
Maya Melati ◽  
Yudiwanti Wahyu
Keyword(s):  
Vigna Unguiculata ◽  
Seed Weight ◽  
Block Design ◽  
Dry Weight ◽  
N Fertilizer ◽  
Plant Seed ◽  
Optimum Rate ◽  
Randomized Block Design ◽  
Goat Manure ◽  
100 Seed Weight

Cowpea (Vigna unguiculata L. Walp) is one of the potential substitutes of soybean due to its similar nutritional content. This study aims to determine the optimum rate of N fertilizer for the production of cowpea, and to determine the effects of the interaction between N fertilizer rates and goat manure application on cowpea production. The experiment was organized in a split-plot with a complete randomized block design with three replications. The main plot was goat manure, i.e. 0 and 5 tons.ha-1; the sub-plot was nitrogen fertilizer with five rates (0, 50, 100, 150, and 200% of the recommended rate), i.e. 0, 22.5, 45, 67.5, and 90 kg N.ha-1. Application of N fertilizer reduced the 100-seed weight and slightly reduced cowpea yield and yield components. Application of goat manure increased seed dry weight per plant, number of pods per plant, dry pod weight per plant, seed dry weight per m2, productivity, 100-seed weight, and the harvest index. There was no significant interaction between goat manure and different rates of nitrogen in affecting cowpea growth.

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