scholarly journals Yield and feed qualities of triticale mixed with high-protein crops

2021 ◽  
Vol 51 (1) ◽  
pp. 60-66
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Single Species ◽  
Steppe Zone ◽  
High Protein ◽  
Forest Steppe ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Growing Conditions ◽  
Mixed Crops

The results of field and laboratory studies on the cultivation of triticale mixed with high-protein crops are presented. The study was carried out during the period of 2015-2017 on meadow chernozem mealy-carbonate soil, light loam by granulometric composition, in the forest-steppe zone of Trans-Baikal Territory. The assessment of triticale in single-species and mixed crops for adaptability to growing conditions and yield is given. Economically valuable traits of these crops are shown. The possibility of increasing the yield and feed qualities of agrocenoses by sowing triticale with highprotein crops was established. On average, over the years of research, mixed crops outperformed single-species triticale agrocenoses in terms of yield and feed quality, green mass by 1.6-1.9 times, digestible protein by 2.6-3.7 times. In mixed crops, triticale with fodder beans provided the best results, the yield of green mass was 40.5 t/ha, dry matter – 5.70 t/ha, feed units – 4.67 t/ha, digestible protein – 785 kg/ha, exchange energy – 57.6 GJ/ha, availability of digestible protein per one feed unit – 168 g. Triticale crops mixed with fodder beans increased productivity compared with singlespecies crops in terms of green mass yield by 1.3-1.9 times, dry matter by 1.4-1.9 times, feed units by 1.4-2.0 times, gross energy by 1.5-2.0 times. All crops are resistant to drought and lodging. The absence of pest and disease infestation in triticale was noted.

scholarly journals Grain crops in fodder production

2020 ◽  
Vol 50 (3) ◽  
pp. 28-35
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Grain Yield ◽  
Single Species ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Winter Rye ◽  
Grain Crops ◽  
Fodder Crops ◽  
Gross Energy ◽  
Digestible Protein ◽  
Growing Conditions

The possibility of increasing the yield of fodder-grain crops in single-species agrocenoses to provide livestock with nutritious highquality feed was studied. The results of field and laboratory studies (2016–2018) on the cultivation of traditional (barley, oats, spring and winter rye) and uncommon fodder crops (triticale, corn) sown as single crops in the forest-steppe zone of Trans-Baikal Territory are presented. The objects of the research were the following recognized varieties of the crops under study: local winter rye Zhitkinskaya, spring rye Onokhoyskaya, oats Metis, barley Anna, triticale Ukro, corn hybrid Obsky 150 CB. The experiment was conducted on meadow chernozem mealy-carbonate soil (light loam by particle size distribution). Poaceous fodder crops were assessed in terms of their adaptability to growing conditions, yield and nutritional value of grain. Their economically valuable characteristics were shown. On average over the years of research, when cultivating traditional and uncommon poaceous crops for fodder grain in single-crop sowings, triticale and corn had an advantage. The grain yield in the experiment was 3.0-5.8 t/ha, collection of fodder units – 3.39-6.13 t/ha, digestible protein 287-494 kg/ha, gross energy – 34.7-60.5 GJ/ha, availability of digestible protein – 85–77 g per one feed unit. Traditional crops were inferior to uncommon crops in terms of grain yield by 0.5-3.3 t/ ha, (on average for the variants of the experiment), feed units – by 0.99-3.73 t/ha, digestible protein – by 85-292 kg/ha, gross energy – by 0.99–35.7 GJ/ha.

scholarly journals CREATION OF AGROCENOSES OF FODDER CROPS FOR SPRING AND EARLY SUMMER USE IN THE FORESTSTEPPE ZONE OF THE TRANS-BAIKAL TERRITORY

2018 ◽  
Vol 48 (4) ◽  
pp. 43-50 ◽  
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Stem Elongation ◽  
Steppe Zone ◽  
Early Summer ◽  
High Yield ◽  
Forest Steppe ◽  
Winter Rye ◽  
Summer Period ◽  
Green Mass ◽  
Digestible Protein

Experimental data on the creation of fodder agrocenoses for the production of green feed in the spring and early summer period is presented. The research was conducted in 2014-2016 in the forest-steppe zone of the Trans-Baikal Territory. The study included winter and spring rye crops and cabbage. It was established that the promising crop that gives the earliest green feed is the winter rye of autumn sowing. It was characterized by a high regrow capacity and formed two yield cuttings in the tillering phase. The yield of green mass was 7.7 t/ha, dry matter – 1.36 t/ha, output of feed units was 1.34 t/ha, the amount of digestible protein – 279 kg/ha. In the phase of stem elongation, the figures were 10.0 t/ ha, 2.17 t/ha, 1.93 t/ha, 287 kg/ ha, respectively; in the earing phase (one cutting) – 9.3 t/ha, 3.30 t/ha, 2.65 t/ha, 287 kg/ha, respectively. Feed biomass was of higher quality when used in the period of tillering, where the content of digestible protein per one feed unit was 206-210 g. The spring sowings of winter rye were inferior to the autumn sowings in the amount of two cuttings in the tillering phase: green mass by 3.3 t/ha, dry matter 0.58 t/ha, feed units 0.58 t/ha, digestible protein 113 kg/ha; in the stem elongation phase: 5.5 t/ha, 1,27 t/ha, 1.15 t/ ha, 168 kg/ha, respectively. Crops of spring rape, oil radish and spring rye are also important, since they allow to obtain a sufficiently high yield in the early summer period. In the budding phase the yield of green mass of cabbage crops was 22.8 and 18.3 t/ ha, dry matter – 2.69 and 2.78 t/ha, feed units – 2.70 and 2.25 t/ha, digestible protein – 648 and 599 kg/ ha; in the flowering phase the figures for oil radish were 21.5 t/ha, 2.56 t/ha, 2.57 t/ha, 499 kg/ ha, respectively. In the tillering phase the figures for spring rye in the amount of two cuttings were 7.3 t/ ha, 1.31 t/ha, 1.11 t/ha, 210 kg/ ha, respectively; in the phase of stem prolongation – 3.8 t/ha, 0.82 t/ ha, 0,87 t/ha, 105 kg/ha, respectively.

scholarly journals Promising uncommon poaceous and leguminous fodder crops

2020 ◽  
Vol 50 (4) ◽  
pp. 32-39
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Nutritional Value ◽  
Field Experiments ◽  
Forest Steppe ◽  
Forage Crops ◽  
Sudan Grass ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Feed Unit

The results of research (2016-2018) into productivity, adaptability and nutritional value of poaceous crops (forage millet, Sudan grass) and legumes (fodder beans, spring vetch, garden peas) are presented and analyzed. The research was conducted on meadow chernozem mealy-carbonate soil, light loam by granulometric composition, in the forest-steppe zone of Trans-Baikal Territory. Agricultural technology used for fodder crop cultivation was common for this area. The objects of the research were legumes (Sibirskiye forage beans, Novosibirskaya spring vetch, Holik garden peas), and poaceous varieties (Bystroe forage millet, Novosibirskaya 84 Sudan grass). The experimental work was carried out in accordance with the generally accepted guidelines for field experiments. All the forage crops under study have formed a fairly high productivity: the yield of green mass was 13.0-18.2 t/ha, dry matter – 2.6-3.2, feed units – 2.2-2.7 t/ha, digestible protein – 220-567 kg/ha, gross energy – 26.5-32.2 GJ/ha, with availability of digestible protein 100-210 g per one feed unit. Among leguminous crops, spring vetch and fodder beans had an advantage with the green mass yield of 13.3-15.0 t/ha, the amount of dry matter of 3.1-3.2, feed units of 2.6-2.7 t/ha, digestible protein 494–567 kg/ha, gross energy 32.0–32.2 GJ/ha, with availability of digestible protein of 190–210 g per one feed unit. Garden peas were inferior to spring vetch and fodder beans in yield by 2.3-13.3%, dry matter – by 9.6-12.5, feed units – by 3.8-7.4, digestible protein – by 4.9-17.1, gross energy – by 8.1–8.7%. Among poaceous crops, agrocenoses of Sudan grass had an advantage in productivity and nutritional value. They formed the yield of green mass 18.2 t/ha, the amount of dry matter 3.1, feed units 2.5 t/ha, digestible protein 300 kg/ha, gross energy 31.3 GJ/ha, with availability of digestible protein of 120 g per one feed unit. Fodder millet was inferior to Sudan grass in all respects by 12.0–26.7%, respectively.

scholarly journals PROSPECTS OF THE USE OF POACEOUS CROPS IN SINGLECROP AND MIXED SOWINGS IN THE CONDITIONS OF TRANS-BAIKAL TERRITORY

2018 ◽  
Vol 48 (4) ◽  
pp. 56-62
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
I. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Steppe Zone ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Sudan Grass ◽  
Fodder Crops ◽  
Gross Energy ◽  
Digestible Protein ◽  
Growing Conditions ◽  
Spring Rape

During the research, non-traditional fodder crops that have high fodder productivity and adaptability to natural and climatic conditions of Trans-Baikal Territory were studied. The results of field and laboratory studies for 2014–2016 are presented on the cultivation of annual poaceous fodder crops – feed millet, Sudan grass and barley in single-crop sowings, as well as mixed with high-protein spring rape, in the forest-steppe zone of Trans-Baikal Territory. The research was conducted on meadow-chernozem mealycarbonate soil. Fodder crops were assessed by their adaptability to growing conditions and by a set of economically valuable characteristics. The possibility of increasing productivity and quality of fodder of poaceous agrocenoses by means of cabbage crops was established. Joint sowings of annual fodder crops: feed millet + spring rape, Sudan grass + spring rape provided the maximum collection of green mass – 24.4-25.9 t/ha, dry matter – 3.55-3.78 t/ha, feed units – 3.17-3.30 t/ha, digestible protein – 506-545 kg/ha, gross energy – 37.3-39.3 GJ., with a high supply of digestible protein to a feed unit – 160-165 g/k per unit. Mixed sowings of Sudan grass and feed millet with spring rape increased collection of feed units by 22.3%, digestible protein – by 86.8%, gross energy – by 18.5% compared to single-crop sowings. Barley, when cultivated under the same conditions, was inferior in productivity to feed millet and Sudan grass in single-crop sowings by 1.2-1.7 times, in mixed sowings – by 1.0-1.5 times. 

scholarly journals Sowing methods of maise for hay in the forest-steppe zone of Western Siberia

2021 ◽  
pp. 31-36
Author(s):  
N. I. Kashevarov ◽  
A. A. Polishchuk ◽  
A. N. Lebedev ◽  
V. I. Ponamareva ◽  
M. V. Khazov
Keyword(s):  
Dry Matter ◽  
Single Species ◽  
Steppe Zone ◽  
Matter Content ◽  
Forest Steppe ◽  
Dry Matter Content ◽  
Seeding Rate ◽  
Dry Matter Concentration ◽  
Sowing Experiment ◽  
Matter Concentration

The authors showed the results of studies of productivity parameters of different early maturing maise hybrids depending on the method of sowing. Experiment included 5 variants: single- seeded hybrids Kubansky 101 and Kubansky 500, Kubansky 101 + Kubansky 500 (50 + 50% of the full seeding rate), Kubansky 101 + Kubansky 500 (25 + 75%) and Kubansky 101 + Kubansky 500 (75 + 25%). The authors carried out a biological yield survey on 10 September. This recording showed that the ultra-early-ripening hybrid Kubansky 101 CB was in the phase of milk-wax maturity of the grain, and the late-ripening Kubansky 500 CB was in the phase of cob formation. In single-species crops, the yields were naturally higher. The late-maturing hybrid yielded 82.0 t/ha, 38.1 t/ha higher than the ultra-maturing hybrid. However, the dry matter yield of the second hybrid was 15.9 % higher, and the cob yield was 29 % higher. The dry matter concentration of the hybrid Kubansky 500 was only 18.8 %. The hybrid Kubansky 101 CB had a dry matter concentration of 34.7 %. Different variations with the ratio of hybrids of different ripeness groups in the sowing showed that in green matter yield, the variants where the proportion of late-ripening hybrid is higher are superior. Thus, the presence of 75% hybrid Kubansky 500 CB allowed obtaining the highest yield of 77.2 t/ha. This yield is almost two times higher than the yield of the single-variety ultra-ripening hybrid (43.9 t/ha). However, the dry matter concentration here was 20.2 %. According to the biochemical analysis of the silage batches harvested, all the forages were benign. No oily acid was detected, and lactic acid predominated over acetic acid. Hay prepared from hybrid Kubansky 101 SV was 33.8% in dry matter content, which compares favourably with silage prepared from hybrid Kubansky 500 SV and mixtures with Kubansky 101 SV. The hybrid Kubansky 500 SV and mixtures with Kubansky 101 SV accounted for 21 % dry matter content. In silage prepared from hybrid Kubansky 101 SV, the percentage of dry matter is 24.2-25 %.

scholarly journals PRODUCTIVITY OF MEDIC BINAR GRASS MIXTURE IN RELATION TO MINERAL NUTRITION

2019 ◽  
pp. 133-138
Author(s):  
V. Iu. Listkov ◽  
A. F. Petrov
Keyword(s):  
Mineral Nutrition ◽  
Dry Matter ◽  
Metabolic Energy ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Green Mass ◽  
Positive Tendency ◽  
Nutrient Value ◽  
Digestible Protein ◽  
The Impact

The research explores the relation between productivity of binary grass mixture and mineral nutrition. The hypothesis assumes that nutrient value of the same forage depends on mineral nutrition of forage grasses. According to purpose of research, the authors specified the task which is seen to analyze the impact of mineral fertilizers on productivity and nutrition of forage mass of binary grass mixture sown under the cover. The object of the research is a binary grass mixture based on alfalfa (Medicago + sainfoin). Sowing was carried out under the barley and Sinapis cover on two mineral backgrounds: control (without fertilizers) and fertilized. Fertilizers were applied the day before sowing. Crop yield and the quality of harvested mass were assessed in the appropriate period which was the stage of Medicago budding. Two-year industrial and economic experiment highlighted necessity and efficiency of sowing Medicago binar grass mixtures under Sinapis cover with 25% lower sowing rate and apply mineral fertilizers dosed as N23P60K60 in the forest-steppe of Novosibirsk region. This application contributed to the highest output of metabolic energy in dry matter (37 GJ/ha). The authors observed a positive tendency on harvesting from 1 ha of fodder units (2.14 tons), digestible protein (0.35 tons), as well as the yield of dry (3.58 tons) and green mass (13.7 tons). In this variant the authors observed the highest output of metabolic energy in dry matter (37 GJ/ha). There was a positive tendency to harvest fodder units (2.14 tons), digestible protein (0.35 tons) pro 1 ha and get dry (3.58 tons) and green mass (13.7 tons).

scholarly journals The estimation of productivity and quality of sainfoin forage

2020 ◽  
pp. 12-15
Author(s):  
A. Ignatiev ◽  
A. A. Regidin
Keyword(s):  
Dry Matter ◽  
Biological Traits ◽  
Standard Variety ◽  
Forage Grasses ◽  
Early Maturity ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Perennial Legume

In the arid south ofRussiasainfoin is one of the key perennial legume forage grasses. It has a number of economic and biological traits and properties, such as anything goes approach to soil cultivation, drought tolerance, early maturity, stability of green mass and seed productivity; seeds don’t need any insecticides, it is convenient for growing in field crop rotation, it is a good forecrop for winter grain crops and it is used as a green manure crop. The purpose of the current study was the estimation of productivity and forage quality of the sainfoin varieties developed in theFSBSIAgriculturalResearchCenter“Donskoy” to the results, there has been found that the sainfoin varieties of theFSBSIAgriculturalResearchCenter“Donskoy” produced stable and large yields of green mass, dry matter and seeds. Throughout the years, productivity of green mass and dry matter of the sainfoin varieties “Veles”, “Sudar” and “Shuravi” varied from 30.0 t/ha to 36.5 t/ha and 8.1 t/ha to 8.3 t/ha, which was higher than that of the standard variety “Zernogradsky2”, respectively 6.5–12.5% and 8.0–10.7%. The productivity of the seeds of these varieties was 0.72–0.77 t/ha, or 9.1–16.7% higher than that of the standard variety. The largest yields among all varieties were produced by the variety “Shuravi”. The varieties “Veles”, “Sudar” and “Shuravi” exceeded the standard variety in the yields of forage units per1 haon 8.0–10.7%, raw protein on 8.1–14.1%, and digestible protein on 9.7–12.9%. Due to the larger yields of dry matter, they produced 83 430–85 490 MJ of gross energy per1 hectare.

scholarly journals Оrganization of a green conveyor of zoned perennial grasses in the Far North

2021 ◽  
pp. 93-96
Author(s):  
S. A. Pavlova ◽  
E. S. Pestereva
Keyword(s):  
Dry Matter ◽  
Maximum Yield ◽  
Single Species ◽  
Exchange Energy ◽  
Perennial Grasses ◽  
Net Income ◽  
Component Mixture ◽  
Far North ◽  
Green Mass ◽  
Digestible Protein

Relevance. The aim of the work is to create a green conveyor belt of perennial zoned grasses in floodplain meadows. For the first time in the Far North on the basis of field experience were studied species composition and mode of use of perennial grasses and legumes for green belt.Methods. The research was conducted in 2018–2020 in field conditions in the experimental field laboratory of horticulture of Yakut Scientific Research Institute of Agriculture named after M.G. Safronov in the Khangalassky ulus of the Sakha Republic (Yakutia). The soil of the experimental site is permafrost floodplain turf light loamy. Sowing was carried out in summer in the first decade of July.Results. The article includes data on the yield, chemical composition and nutritional value, and economic efficiency of perennial grasses. Over the years of research, the maximum yield was obtained from the grass mixtures of rumps (20)+ wheatgrass (16) — 4.0 t/ha of green mass, which is higher than the natural herbage by 2.4 t/ha of green mass. The yield of net sowing of sickle alfalfa (8 kg/ha) was 4.5 t/ha of green mass. The maximum yield from leguminous grass mixtures was provided by a two-component mixture of alfalfa (8 kg/ha) + stalk (10 kg/ha) — 4.9 t/ha of green mass. The highest content of crude protein when creating a green conveyor from single-species cereal crops is observed in red oatmeal — 18.2%, while the content of exchange energy is 9.1 MJ, feed units — 0.66, digestible protein — 122 g in 1 kg of dry matter. Of legumes and cereals the highest content of raw protein is provided by alfalfa (8 kg/ha) — 19.0%, while the content of exchange energy is 9.3 MJ, feed units — 0.70, digestible protein is 120 g per 1 kg of dry matter. When creating a green conveyor from grass stands, a high conditional net income is obtained when sowing boneless stalk (20 kg/ha) +w heatgrass (16 kg/ha) — 5688 rubles/ha, while the cost of production is 12,000 rubles/ha, the profitability is 90%.

scholarly journals Oilseed radish in single- and multi-crop sowings with poaceous crops

2020 ◽  
Vol 50 (2) ◽  
pp. 23-31
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
High Energy ◽  
Raw Material ◽  
Laboratory Research ◽  
Forest Steppe ◽  
Dry Matter Content ◽  
Oilseed Radish ◽  
Gross Energy ◽  
Digestible Protein

The results of field and laboratory research for 2015–2017 are presented and analyzed on the cultivation of traditional and uncommon poaceous crops. Recognized varieties of barley, oats, and millet were studied in single-crop sowings and intercropped with a high-protein cabbage crop – oilseed radish. The research was conducted on meadow chernozem mealy-carbonate soil in the forest-steppe zone of Trans-Baikal Territory. Agricultural technology used for fodder crop cultivation was common for this area. The objects of the research were the following varieties: barley Anna, oats Metis, millet Bystroe, oilseed radish Tambovchanka. The experimental work was carried out in accordance with the generally accepted guidelines for field experiments. Poaceous crops and oilseed radish were assessed in terms of their adaptability to growing conditions and their economically valuable characteristics that ensure sustainable production of high-energy feed. In multi-crop agrocenoses of poaceous crops and oilseed radish, the yield increased and the quality of feed raw material improved. The best results of multi-crop sowings were achieved by oats and millet intercropped with oilseed radish. The yield of green mass was 38.8-39.7 t/ha, dry matter content – 4.88-4.90 t/ha, digestible protein – 810820 kg/ha, and gross energy – 46.3-52.2 GJ/ha with availability of digestible protein – 180-186 g per one feed unit. Multi-crop sowings of oats and millet with radish oilseed are more productive than single-crop poaceous agrocenoses in feed units by 1.5-1.7 times, digestible protein by 2.9-3.3 times, gross energy by 1.2-1.6 times, with 10.5-10.7 MJ of exchangeable energy in one kilogram of dry matter.

scholarly journals BREEDING OF CREEPING CLOVER IN THE FOREST-STEPPE CONDITIONS OF THE MIDDLE VOLGA REGION

2021 ◽  
Vol 16 (4) ◽  
pp. 55-60
Author(s):  
Ol'ga Timoshkina ◽  
Oleg Timoshkin
Keyword(s):  
Dry Matter ◽  
Perennial Grasses ◽  
Volga Region ◽  
Forest Steppe ◽  
Middle Volga Region ◽  
High Productivity ◽  
Green Mass ◽  
Middle Volga ◽  
Digestible Protein ◽  
Number Of Seeds

The article presents the data of assessing the productivity and nutritional value of selection samples of creeping clover in the nursery of the competitive variety testing of 2016 sowing for three years of use. The purpose of the research is to identify a promising breeding material of creeping clover for creating a variety with high productivity of green mass and seeds, suitable for mechanized harvesting of seeds for the conditions of the forest-steppe of the Middle Volga region. The research was carried out in 2017-2019 on the experimental field of a separate subdivision of Penza FGBSI FSC of BC in accordance with the methodological instructions for the selection of perennial grasses. On average over three years of use in terms of the yield of green mass – 15.00-16.44 t/ha, cultivar samples of creeping clover V-92, Yu-90, P-97, Pl-90-4 significantly exceeded the VIK-70 standard (14,01 t/ha) by 7.1-17.3%, for the collection of dry matter – 3.49-3.97 t/ha varieties V-92, Yu-90, P-97 and Pl-90-3 reliably exceeded the standard (3.29 t/ha) by 6.1-20.7%, in the collection of digestible protein – 0.44-0.49 t/ha, the varieties B-92 and P-97 exceeded the standard (0, 40 t/ha) by 10.0-22.5%. Maximum values of the yield of green mass (16.44 t/ha), dry matter collection (3.97 t/ha), digestible protein (0.49 t/ha), feed units (5.04 t/ha) and exchange energy (49.12 GJ/ha) on average for the years of testing showed the sample P-97. This specimen significantly exceeded the standard in terms of structural elements and seed yield by 50.5%, in the height of leaf petioles by 3.5% and peduncles by 2.5%, which is important for mechanized harvesting of seeds. When selecting for the productivity of creeping clover, one should pay attention to the signs associated with the yield of green mass and seeds. The length of leaf petioles correlates with the length of peduncles (r = 0.78), the number of seeds in the head (r = 0.46), the number of inflorescences in the head (r = 0.47), with the collection of dry matter (r = 0.31). The length of the peduncles correlates with the collection of dry matter (r = 0.30), with the number of inflorescences in the head (r = 0.54), and with the number of seeds in the head (r = 0.51). The number of inflorescences in the head correlates with the number of seeds in the head (r = 0.61) and with the yield of seeds (r = 0.31)

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